| Abelia x grandiflora | Glossy abelia | Caprifoliaceae |
| Abelmoschus esculentus | Okra, gumbo, lady's finger | Malvaceae |
| Abelmoschus manihot | Edible hibiscus, Tongan spinach, sunset muskmallow | Malvaceae |
| Abrus precatorius | Black-eyed Susan, rosary pea | Fabaceae |
| Abutilon eremitopetalum | Hidden petal abutilon | Malvaceae |
| Abutilon grandifolium | Hairy abutilon | Malvaceae |
| Abutilon incanum | Hoary abutilon | Malvaceae |
| Abutilon menziesii | Kooloaula | Malvaceae |
| Abutilon pictum | Lantern ilima, royal ilima | Malvaceae |
| Abutilon x hybridum | Hybrid abutilon | Malvaceae |
| Abutilon x milleri | Trailing abutilon | Malvaceae |
| Acacia aneura | Mulga acacia | Fabaceae |
| Acacia aulacocarpa | Hickory wattle, brown salwood | Fabaceae |
| Acacia auriculiformis | Earpod wattle | Fabaceae |
| Acacia confusa | Formosa koa | Fabaceae |
| Acacia koa | Koa | Fabaceae |
| Acacia koaia | Koaiʻa, koaia, koaiʻe, dwarf koa | Fabaceae |
| Acacia koaia x koa | Koaia koa hybrid, koaiʻa x koa | Fabaceae |
| Acacia mangium | Mangium wattle | Fabaceae |
| Acacia mearnsii | Black wattle | Fabaceae |
| Acacia melanoxylon | Australian blackwood | Fabaceae |
| Acacia podalyriifolia | Queensland silver wattle | Fabaceae |
| Acacia retinodes | Water wattle | Fabaceae |
| Acacia sp. | Unknown acacia | Fabaceae |
| Acaciella angustissima | Prairie acacia | Fabaceae |
| Acalypha hispida | Chenille plant, red hot cattail | Euphorbiaceae |
| Acalypha reptans | Cat tail | Euphorbiaceae |
| Acalypha wilkesiana | Copper leaf, beefsteak | Euphorbiaceae |
| Acanthocereus tetragonus | Fairytale castle | Cactaceae |
| Acanthospermum australe | Spiny-bur, Paraguay bur, ihi kukae hipa, pipili | Asteraceae |
| Acanthospermum hispidum | Bristly starbur | Asteraceae |
| Acca sellowiana | Pineapple guava | Myrtaceae |
| Acer buergerianum | Trident maple | Sapindaceae |
| Acer palmatum | Japanese maple | Sapindaceae |
| Acer sp. | Maple | Sapindaceae |
| Achillea millefolium | Common yarrow, milfoil | Asteraceae |
| Achyranthes aspera var. aspera | Prickly achyranthes, devil's horsewhip | Amaranthaceae |
| Achyranthes mutica | Achyranthes | Amaranthaceae |
| Achyranthes splendens var. rotundata | Achyranthes | Amaranthaceae |
| Achyranthes splendens var. splendens | Achyranthes | Amaranthaceae |
| Acmella oleracea | Spilanthes, toothache plant, jambu | Asteraceae |
| Acoelorrhaphe wrightii | Saw palmetto | Arecaceae |
| Acorus sp. | Sweet flag | Araceae |
| Acrostichum sp. | Giant leather fern | Pteridaceae |
| Actinidia deliciosa | Kiwi fruit, Chinese gooseberry | Actinidiaceae |
| Adansonia digitata | Boabab, bottle tree, dead rat tree | Bombacaceae |
| Adansonia madagascariensis | Baobab | Bombacaceae |
| Adenanthera pavonina | Red sandalwood, false wiliwili | Fabaceae |
| Adenium obesum | Desert rose, mock azalea | Apocynaceae |
| Adenophorus pinnatifidus | Adenophorus | Polypodiaceae |
| Adenophorus pinnatifidus var. pinnatifidus | Wahine noho mauna | Polypodiaceae |
| Adenophorus tamariscinus | Wahine noho mauna | Polypodiaceae |
| Adenophorus tenellus | Kolokolo, mahinalua | Polypodiaceae |
| Adiantum hispidulum | Rough maidenhair fern | Pteridaceae |
| Adiantum raddianum | Maidenhair fern | Pteridaceae |
| Adiantum sp. | Maidenhair fern | Pteridaceae |
| Adiantum tenerum | Fan maidenhair | Pteridaceae |
| Adiantum trapeziforme | Diamond maidenhair | Pteridaceae |
| Aechmea blanchetiana | Bromeliad | Bromeliaceae |
| Aechmea fasciata | Silver vase, urn plant | Bromeliaceae |
| Aechmea lueddemanniana | Bromeliad | Bromeliaceae |
| Aechmea sp. | Aechmea | Bromeliaceae |
| Aechmea victoriana var. discolor | Aechmea | Bromeliaceae |
| Aegle marmelos | Bael, Bengal quince, stone apple | Rutaceae |
| Aeonium arboreum | Tree aeonium | Crassulaceae |
| Aeonium sp. | Aeonium | Crassulaceae |
| Aeschynanthus pulcher | Lipstick plant, scarlet basket vine | Gesneriaceae |
| Aeschynanthus speciosus | Lipstick plant, basket plant | Gesneriaceae |
| Afrocarpus falcatus | Sickle leaved yellowwood, Outeniqua yellowwood | Podocarpaceae |
| Agapanthus praecox subsp. orientalis | Lily of the Nile | Liliaceae |
| Agapanthus sp. | Lily of the Nile | Liliaceae |
| Agastache foeniculum | Anise hyssop, licorice mint | Lamiaceae |
| Agathis robusta | Queensland kauri | Araucariaceae |
| Agave americana | Century plant | Asparagaceae |
| Agave angustifolia | Caribbean agave | Asparagaceae |
| Agave attenuata | Swan's neck agave | Asparagaceae |
| Agave filifera | Thread leaf agave | Asparagaceae |
| Agave guiengola | Agave | Asparagaceae |
| Agave potatorum | Agave | Asparagaceae |
| Agave sisalana | Sisal | Asparagaceae |
| Agave sp. | Agave | Asparagaceae |
| Agave stricta | Hedgehog agave | Asparagaceae |
| Agave tequilana | Blue agave, tequila agave | Asparagaceae |
| Agave utahensis | Utah agave | Asparagaceae |
| Agave vilmoriniana | Octopus agave | Asparagaceae |
| Ageratina adenophora | Maui pamakani, pamakani haole | Asteraceae |
| Ageratina riparia | Hamakua pamakani, spreading mist flower | Asteraceae |
| Ageratum conyzoides | Maile honohono, billygoat weed | Asteraceae |
| Ageratum houstonianum | Maile honohono, maile kula | Asteraceae |
| Aglaia odorata | Chinese rice flower, mei sui lan | Meliaceae |
| Aglaia saltatorum | Langakali | Meliaceae |
| Aglaonema commutatum | Chinese evergreen | Araceae |
| Aglaonema sp. | Aglaonema | Araceae |
| Agonis flexuosa | Willow myrtle, Western Australia peppermint tree | Myrtaceae |
| Agrostis sandwicensis | Bentgrass | Poaceae |
| Agrostis stolonifera | Creeping bentgrass | Poaceae |
| Aiphanes sp. | Aiphanes palm | Arecaceae |
| Aira caryophyllea | Silver hairgrass | Poaceae |
| Ajania pacifica | Pacific chrysanthemum | Asteraceae |
| Ajuga reptans | Bugleweed, carpet bugleweed | Lamiaceae |
| Albizia lebbeck | Siris tree | Fabaceae |
| Albizia zygia | Albizia | Fabaceae |
| Alectryon macrococcus var. auwahiensis | Mahoe | Sapindaceae |
| Alectryon macrococcus var. macrococcus | Mahoe | Sapindaceae |
| Aleurites moluccana | Kukui, kukui nut | Euphorbiaceae |
| Allamanda blanchetii | Purple allamanda | Apocynaceae |
| Allamanda cathartica | Yellow allamanda | Apocynaceae |
| Allamanda schottii | Bush allamanda | Apocynaceae |
| Allium ampeloprasum | Leeks | Liliaceae |
| Allium ampeloprasum var. ampeloprasum | Elephant garlic | Liliaceae |
| Allium cepa | Onion | Liliaceae |
| Allium fistulosum | Green onion, bunching onion | Liliaceae |
| Allium sativum | Garlic | Liliaceae |
| Allium schoenoprasum | Chives | Liliaceae |
| Allium tuberosum | Garlic chives, Chinese chives | Liliaceae |
| Alluaudia humbertii | Alluaudia | Didiereaceae |
| Alocasia macrorrhizos | Ape | Araceae |
| Alocasia micholitziana | African mask | Araceae |
| Alocasia odora | Giant upright elephant ear | Araceae |
| Alocasia plumbea | Elephant ear, metallic taro | Araceae |
| Alocasia reginula | Black velvet taro | Araceae |
| Alocasia sp. | Alocasia | Araceae |
| Alocasia x amazonica | African mask, Amazon elephant ear | Araceae |
| Alocasia zebrina | Alocasia | Araceae |
| Aloe arborescens | Shrub aloe | Asphodelaceae |
| Aloe barberae | Tree aloe | Asphodelaceae |
| Aloe ciliaris | Climbing aloe | Asphodelaceae |
| Aloe congolensis | Tiger tooth aloe | Asphodelaceae |
| Aloe humilis | Hedgehog aloe, spider aloe, crocofile jaws | Asphodelaceae |
| Aloe juvenna | Aloe | Asphodelaceae |
| Aloe massawana | Aloe | Asphodelaceae |
| Aloe plicatilis | Fan aloe | Asphodelaceae |
| Aloe rauhii | Snowflake aloe | Asphodelaceae |
| Aloe sp. | Unknown aloe | Asphodelaceae |
| Aloe squarrosa | Aloe | Asphodelaceae |
| Aloe succotrina | Fynbos aloe | Asphodelaceae |
| Aloe vera | Aloe, aloe vera, common aloe | Asphodelaceae |
| Aloysia citrodora | Lemon verbena, lemon beebrush | Verbenaceae |
| Alphitonia ponderosa | Kauila | Rhamnaceae |
| Alpinia calcarata | Miniature ginger | Zingiberaceae |
| Alpinia galanga | Thai ginger, greater galangal | Zingiberaceae |
| Alpinia luteocarpa | Red bamboo ginger | Zingiberaceae |
| Alpinia mutica | Small shell ginger | Zingiberaceae |
| Alpinia purpurata | Red ginger, pink ginger | Zingiberaceae |
| Alpinia rugosa | Ginger | Zingiberaceae |
| Alpinia zerumbet | Shell ginger | Zingiberaceae |
| Alstonia macrophylla | Deviltree | Apocynaceae |
| Alstroemeria sp. | Peruvian lily | Liliaceae |
| Alternanthera brasiliana | Ruby leaf, black night, upright calico plant | Amaranthaceae |
| Alternanthera caracasana | Mat chaff flower | Amaranthaceae |
| Alternanthera porrigens | Dwarf bozu | Amaranthaceae |
| Alternanthera pungens | Khaki weed | Amaranthaceae |
| Alternanthera sessilis | Sessile joyweed | Amaranthaceae |
| Alternanthera sp. | Unknown alternanthera | Amaranthaceae |
| Alternanthera tenella | Joy weed | Amaranthaceae |
| Alysicarpus vaginalis | Alyce clover | Fabaceae |
| Alyxia stellata | Maile | Apocynaceae |
| Amaranthus brownii | Nihoa amaranth | Amaranthaceae |
| Amaranthus dubius | Spleen amaranth | Amaranthaceae |
| Amaranthus hybridus | Green amaranth | Amaranthaceae |
| Amaranthus palmeri | Palmer's amaranth | Amaranthaceae |
| Amaranthus spinosus | Spiny amaranth, pakai kuku | Amaranthaceae |
| Amaranthus tricolor | Een choy, Chinese spinach, Joseph's coat | Amaranthaceae |
| Amaranthus viridis | Slender amaranth, aheahea, pakapakai | Amaranthaceae |
| Amarcrinum howardii | Amarcrinum | Liliaceae |
| Amaryllis belladonna | Belladonna amaryllis | Amaryllidaceae |
| Amauropelta globulifera | Palapalai a Kamapuaa | Thelypteridaceae |
| Ambrosia artemisiifolia | Ambrosia | Asteraceae |
| Amherstia nobilis | Pride of Burma | Fabaceae |
| Ammannia coccinea | Valley redstem | Lythraceae |
| Ammi majus | Bullwort | Apiaceae |
| Amorphophallus titanum | Titan arum | Araceae |
| Anacardium occidentale | Cashew | Anacardiaceae |
| Anadenanthera colubrina | Vika, huilco, wilco, cebil, angico | Fabaceae |
| Anagallis arvensis | Scarlet pimpernel | Primulaceae |
| Ananas ananassoides | Cerrado pineapple | Bromeliaceae |
| Ananas bracteatus | Red pineapple | Bromeliaceae |
| Ananas comosus | Pineapple | Bromeliaceae |
| Ananas nanus | Pink pineapple, dwarf pineapple | Bromeliaceae |
| Andropogon bicornis | Barbas de indio | Poaceae |
| Andropogon glomeratus | Bushy bluestem | Poaceae |
| Andropogon glomeratus var. pumilus | Bushy bluestem | Poaceae |
| Andropogon virginicus | Broomsedge | Poaceae |
| Anemone hupehensis | Japanese anemone | Ranunculaceae |
| Anethum graveolens | Dill weed | Apiaceae |
| Angelonia angustifolia | Narrowleaf angelon | Scrophulariaceae |
| Angelonia salicariifolia | Angelonia | Scrophulariaceae |
| Angiopteris evecta | Mule's-foot fern | Marattiaceae |
| Angophora costata | Gum myrtle | Myrtaceae |
| Angraecum eburneum | Angraecum | Orchidaceae |
| Anigozanthos flavidus | Kangaroo paw | Haemodoraceae |
| Annona cherimola | Cherimoya, custard apple | Annonaceae |
| Annona glabra | Pond apple | Annonaceae |
| Annona muricata | Soursop | Annonaceae |
| Annona reticulata | Custard apple, bullock's heart | Annonaceae |
| Annona sp. | Annona | Annonaceae |
| Annona squamosa | Sugar apple, sweet sop, custard apple | Annonaceae |
| Annona x atemoya | Atemoya | Annonaceae |
| Anoectochilus sandvicensis | Jewel orchid | Orchidaceae |
| Anredera cordifolia | Madeira vine, mignonette vine, uala hupe | Basellaceae |
| Anthoxanthum odoratum | Sweet vernalgrass | Poaceae |
| Anthurium andraeanum | Flamingo lily | Araceae |
| Anthurium hookeri | Bird's nest anthurium | Araceae |
| Anthurium plowmanii | Anthruium | Araceae |
| Anthurium scherzerianum | Pigtail anthurium | Araceae |
| Anthurium sp. | Anthurium | Araceae |
| Anthurium watermalieuse | Black anthurium | Araceae |
| Antidesma platyphyllum | Hame | Phyllanthaceae |
| Antidesma pulvinatum | Hame | Phyllanthaceae |
| Antigonon leptopus | Mexican creeper | Polygonaceae |
| Antirrhinum majus | Snapdragon | Plantaginaceae |
| Antirrhinum orontium | Lesser snapdragon | Plantaginaceae |
| Aphelandra sinclairiana | Coral aphelandra | Acanthaceae |
| Apium graveolens | Wild celery, Chinese celery, khueu chai | Apiaceae |
| Apium graveolens var. dulce | Celery | Apiaceae |
| Aptenia cordifolia | Rock rose | Aizoaceae |
| Arabidopsis thaliana | Mouse-ear cress | Brassicaceae |
| Arachis hypogaea | Peanut | Fabaceae |
| Arachis pintoi | Golden glory, pinto peanut | Fabaceae |
| Arachis sp. | Ground peanut | Fabaceae |
| Arachniodes simplicior | East Indian holly fern | Polypodiaceae |
| Araucaria bidwillii | Bunya pine | Araucariaceae |
| Araucaria columnaris | Cook pine | Araucariaceae |
| Araucaria cunninghamii | Moreton Bay pine, hoop pine | Araucariaceae |
| Araucaria heterophylla | Norfolk Island pine | Araucariaceae |
| Archontophoenix alexandrae | Alexander palm | Arecaceae |
| Archontophoenix cunninghamiana | King palm, bangalow palm, piccabeen palm | Arecaceae |
| Archontophoenix purpurea | Mount Lewis king palm | Arecaceae |
| Archontophoenix sp. | Alexander palm | Arecaceae |
| Arctium lappa | Gobo, burdock | Asteraceae |
| Arctotheca calendula | Capeweed | Asteraceae |
| Arctotis sp. | African daisy | Asteraceae |
| Arctotis stoechadifolia | African daisy | Asteraceae |
| Ardisia crenata | Hilo holly | Primulaceae |
| Ardisia elliptica | Shoebutton ardisia, inkberry | Primulaceae |
| Ardisia escallonioides | Marlberry, dogberry | Primulaceae |
| Areca catechu | Betel nut palm | Arecaceae |
| Areca vestiaria | Orange crownshaft palm, pinang merah | Arecaceae |
| Arenaria serpyllifolia | Thyme-leaved sandwort | Caryophyllaceae |
| Arenga tremula | Philippine dwarf sugar palm | Arecaceae |
| Arenga undulatifolia | Aren Gelora | Arecaceae |
| Argemone glauca | Pua kala | Papaveraceae |
| Argemone glauca x mexicana | Pua kala hybrid | Papaveraceae |
| Argemone mexicana | Mexican poppy | Papaveraceae |
| Argyranthemum frutescens | Paris daisy, Marguerite daisy | Asteraceae |
| Argyranthemum sp. | Argyranthemum | Asteraceae |
| Argyreia nervosa | Silver morning glory, baby wood rose | Convolvulaceae |
| Argyroxiphium caliginis | Eke silversword | Asteraceae |
| Argyroxiphium grayanum | Greensword | Asteraceae |
| Argyroxiphium kauense | Ahinahina, Kau silversword | Asteraceae |
| Argyroxiphium sandwicense subsp. macrocephalum | Ahinahina, Haleakala silversword | Asteraceae |
| Argyroxiphium sandwicense subsp. sandwicense | Ahinahina, Mauna Kea silversword | Asteraceae |
| Argyroxiphium sandwicense x virescens | Possible silversword hybrid | Asteraceae |
| Argyroxiphium x Dubautia | Silversword hybrid | Asteraceae |
| Aristolochia littoralis | Calico flower | Aristolochiaceae |
| Arrhenatherum elatius | Arrhenatherum | Poaceae |
| Artabotrys hexapetalus | Climbing ylang-ylang | Annonaceae |
| Artemisia australis | Ahinahina, hinahina, hinahina kuahiwi | Asteraceae |
| Artemisia dracunculus | French tarragon | Asteraceae |
| Artemisia mauiensis | Ahinahina, hinahina | Asteraceae |
| Artemisia mauiensis var. diffusa | Ahinahina, hinahina | Asteraceae |
| Artemisia sp. | Artemisia | Asteraceae |
| Artemisia vulgaris | Mugwort | Asteraceae |
| Arthrostemma ciliatum | Arthrostema | Melastomataceae |
| Artocarpus altilis | Ulu, breadfruit | Moraceae |
| Artocarpus heterophyllus | Jackfruit | Moraceae |
| Artocarpus odoratissimus | Marang | Moraceae |
| Artocarpus parvus | Kwai muk | Moraceae |
| Artocarpus sericicarpus | Pedalai, gomihan, gumihan | Moraceae |
| Artocarpus sp. | Artocarpus | Moraceae |
| Artocarpus treculianus | Gui mu | Moraceae |
| Arundina graminifolia | Bamboo orchid | Orchidaceae |
| Arundo donax | Giant reed | Poaceae |
| Asclepias curassavica | Butterfly weed, bloodflower | Apocynaceae |
| Asclepias physocarpa | Balloon plant | Apocynaceae |
| Asparagus asparagoides | Smilax, bridal creeper | Asparagaceae |
| Asparagus densiflorus | Asparagus fern, foxtail asparagus, sprengeri | Asparagaceae |
| Asparagus macowanii | Regal fern, ming fern, asparagus fern | Asparagaceae |
| Asparagus officinalis | Asparagus | Asparagaceae |
| Asparagus plumosus | Asparagus fern | Asparagaceae |
| Asparagus sp. | Asparagus | Asparagaceae |
| Asplenium acuminatum | Lola | Aspleniaceae |
| Asplenium adiantum-nigrum | Iwaiwa | Aspleniaceae |
| Asplenium aethiopicum | Iwaiwa a Kane | Aspleniaceae |
| Asplenium contiguum | Asplenium | Aspleniaceae |
| Asplenium insiticium | Piipii lau manamana | Aspleniaceae |
| Asplenium lobulatum | Piipii lau manamana, analii | Aspleniaceae |
| Asplenium macraei | Iwaiwa lau lii | Aspleniaceae |
| Asplenium nidus | Ekaha, bird's nest fern | Aspleniaceae |
| Asplenium normale | Asplenium | Aspleniaceae |
| Asplenium polyodon | Punana manu | Aspleniaceae |
| Asplenium sp. | Asplenium | Aspleniaceae |
| Asplenium trichomanes subsp. densum | Maidenhair spleenwort | Aspleniaceae |
| Asplenium unilaterale | Pamoho | Aspleniaceae |
| Astelia menziesiana | Painiu, kaluaha, pua akuhinia | Asteliaceae |
| Aster subulatus var. sandwicensis | Annual saltmarsh aster | Asteraceae |
| Asteriscus maritimus | Compact gold coin, Mediterranean beach daisy | Asteraceae |
| Asystasia gangetica | Chinese violet, coromandel | Acanthaceae |
| Asystasia gangetica subsp. micrantha | Small Chinese violet | Acanthaceae |
| Asystasia sp. | Asystasia | Acanthaceae |
| Athyrium microphyllum | Akolea | Woodsiaceae |
| Atriplex canescens | Four wing saltbush | Amaranthaceae |
| Atriplex lentiformis | Tree atriplex, lens scale, quailbush | Amaranthaceae |
| Atriplex muelleri | Mueller's saltbush | Amaranthaceae |
| Atriplex semibaccata | Australian saltbush | Amaranthaceae |
| Atriplex suberecta | Saltbush | Amaranthaceae |
| Atuna racemosa subsp. racemosa | Atuna | Chrysobalanaceae |
| Austrocylindropuntia subulata | Eve's pin cactus, can cholla | Cactaceae |
| Avena nuda | Hulless oats | Poaceae |
| Avena sativa | Oat | Poaceae |
| Averrhoa bilimbi | Bilimbi, cucumber tree | Oxalidaceae |
| Averrhoa carambola | Star fruit, carambola | Oxalidaceae |
| Avicennia germinans | Black mangrove | Verbenaceae |
| Axonopus compressus | Wide-leaved carpetgrass | Poaceae |
| Axonopus fissifolius | Narrow-leaved carpetgrass | Poaceae |
| Azadirachta indica | Neem | Meliaceae |
| Azolla filiculoides | Ferny azolla, large mosquito fern | Salviniaceae |
| Azolla pinnata | Ferny azolla, mosquito fern | Salviniaceae |
| Baccharis halimifolia | Groundsel bush, consumption weed | Asteraceae |
| Bacopa monnieri | Aeae | Plantaginaceae |
| Bactris gasipaes | Peach palm | Arecaceae |
| Bambusa glaucophylla | Dwarf Malay bamboo | Poaceae |
| Bambusa lako | Timor black bamoo | Poaceae |
| Bambusa multiplex | Hedge bamboo | Poaceae |
| Bambusa oldhamii | Giant timber bamboo, Oldham's bamboo, old hamii | Poaceae |
| Bambusa textilis | Weaver's bamboo | Poaceae |
| Bambusa ventricosa | Buddha belly bamboo | Poaceae |
| Bambusa vulgaris | Common bamboo, giant yellow clumping bamboo | Poaceae |
| Banisteriopsis caapi | Caapi vine, ayahuasca, yage | Malpighiaceae |
| Banksia aemula | Wallum banksia tree | Proteaceae |
| Banksia baueri | Possum banksia, wooly banksia | Proteaceae |
| Banksia ericifolia | Heath banksia, lantern banksia | Proteaceae |
| Banksia integrifolia | Coast banksia | Proteaceae |
| Banksia marginata | Silver banksia | Proteaceae |
| Banksia menziesii | Menzies banksia | Proteaceae |
| Banksia prionotes | Acorn banksia | Proteaceae |
| Banksia sp. | Banksia | Proteaceae |
| Banksia speciosa | Showy banksia | Proteaceae |
| Banksia spinulosa var. collina | Hill banksia, golden candlesticks | Proteaceae |
| Barleria albostellata | Downy barleria | Acanthaceae |
| Barleria cristata | Philippine violet | Acanthaceae |
| Barleria repens | Coral creeper | Acanthaceae |
| Barringtonia asiatica | Barringtonia, hotu, hutu, shaving brush tree | Lecythidaceae |
| Barringtonia edulis | Cut nut | Lecythidaceae |
| Bartlettina sordida | Bartlettina | Asteraceae |
| Basella alba | Ceylon spinach, Malabar spinach | Basellaceae |
| Bassia hyssopifolia | Bassia | Amaranthaceae |
| Batis maritima | Pickleweed | Bataceae |
| Bauhinia acuminata | Dwarf white bauhinia, white orchid-tree, snowy orchid-tree | Fabaceae |
| Bauhinia galpinii | Pride of the Cape, red bauhinia, nasturtium bauhinia | Fabaceae |
| Bauhinia glauca | Climbing bauhinia | Fabaceae |
| Bauhinia hookeri | Mountain ebony | Fabaceae |
| Bauhinia monandra | Pink bauhinia, orchid tree, Napoleon's plume | Fabaceae |
| Bauhinia monandra var. alba | St. Thomas tree | Fabaceae |
| Bauhinia purpurea | Orchid tree | Fabaceae |
| Bauhinia sp. | Bauhinia | Fabaceae |
| Bauhinia variegata | Orchid tree | Fabaceae |
| Bauhinia variegata var. candida | White variegated orchid tree | Fabaceae |
| Bauhinia x blakeana | Hong Kong orchid tree | Fabaceae |
| Beaucarnea recurvata | Pony tail palm, beaucarnea, bottle ponytail | Asparagaceae |
| Begonia brevirimosa subsp. exotica | Exotic begonia, shrub begonia | Begoniaceae |
| Begonia foliosa | Fern begonia, fern leaf begonia | Begoniaceae |
| Begonia hirtella | Begonia | Begoniaceae |
| Begonia odorata | Begonia | Begoniaceae |
| Begonia sp. | Begonia | Begoniaceae |
| Belamcanda chinensis | Hiogi, blackberry-lily, leopard flower | Iridaceae |
| Berkheya purpurea | Purple berkheya | Asteraceae |
| Beta vulgaris | Beet | Amaranthaceae |
| Beta vulgaris subsp. cicla | Chard, Swiss chard, spinach beet | Amaranthaceae |
| Bidens alba var. radiata | Beggartick | Asteraceae |
| Bidens campylotheca subsp. pentamera | Rainforest bidens | Asteraceae |
| Bidens conjuncta | Kookoolau | Asteraceae |
| Bidens cynapiifolia | Blue bidens | Asteraceae |
| Bidens hillebrandiana | Kookoolau | Asteraceae |
| Bidens mauiensis | Kookoolau | Asteraceae |
| Bidens menziesii | Kookoolau | Asteraceae |
| Bidens menziesii subsp. filiformis | Kookoolau | Asteraceae |
| Bidens menziesii subsp. menziesii | Kookoolau | Asteraceae |
| Bidens menziesii x mauiense | Kookoolau hybrid | Asteraceae |
| Bidens micrantha | Kookoolau | Asteraceae |
| Bidens micrantha subsp. kalealaha | Kookoolau | Asteraceae |
| Bidens micrantha subsp. micrantha | Kookoolau | Asteraceae |
| Bidens micrantha x hillebrandiana | Kookoolau hybrid | Asteliaceae |
| Bidens pilosa | Spanish needle, ki, ki nehe, ki pipili, nehe | Asteraceae |
| Bidens sp. | Bidens | Asteraceae |
| Bidens wiebkei | Kookoolau | Asteraceae |
| Billbergia sp. | Billbergia | Bromeliaceae |
| Bischofia javanica | Bischofia, Javanese bishopwood | Phyllanthaceae |
| Bismarckia nobilis | Bismarck palm | Arecaceae |
| Bixa orellana | Annatto, achiote, lipstick tree, alaea laau, kumauna | Bixaceae |
| Blainvillea gayana | Blainvillea | Asteraceae |
| Blechnum appendiculatum | Blechnum | Blechnaceae |
| Blechnum gibbum | Dwarf tree fern | Blechnaceae |
| Bobea elatior | Ahakea | Rubiaceae |
| Bocconia frutescens | Tree poppy | Papaveraceae |
| Boehmeria grandis | Akolea | Urticaceae |
| Boerhavia acutifolia | Alena | Nyctaginaceae |
| Boerhavia coccinea | Boerhavia | Nyctaginaceae |
| Boerhavia herbstii | Alena | Nyctaginaceae |
| Boerhavia repens | Alena | Nyctaginaceae |
| Boerhavia sp. | Alena | Nyctaginaceae |
| Bolboschoenus maritimus | Kaluha | Cyperaceae |
| Bolusanthus speciosus | Tree wisteria | Fabaceae |
| Bombax ceiba | Red silk cotton tree, kapok | Bombacaceae |
| Bonamia menziesii | Bonamia | Convolvulaceae |
| Bontia daphnoides | Bontia | Myoporaceae |
| Borago officinalis | Borage | Boraginaceae |
| Borassodendron machadonis | Borassodendron | Arecaceae |
| Bothriochloa barbinodis | Fuzzy top | Poaceae |
| Bothriochloa bladhii | Airport grass | Poaceae |
| Bothriochloa laguroides | Beardgrass | Poaceae |
| Bothriochloa pertusa | Pitted beardgrass | Poaceae |
| Bothriochloa sp. | Beardgrass | Poaceae |
| Bougainvillea sp. | Bougainvillea | Nyctaginaceae |
| Bougainvillea spectabilis | Bougainvillea | Nyctaginaceae |
| Bougainvillea x buttiana | Bougainvillea | Nyctaginaceae |
| Bouvardia ternifolia | Scarlet bouvardia | Rubiaceae |
| Brachychiton acerifolius | Flame bottle tree | Malvaceae |
| Brachychiton populneus | Kurrajong | Malvaceae |
| Brachycome multifida | Cut leaf daisy | Asteraceae |
| Brachycome sp. | Brachycome | Asteraceae |
| Bracteantha bracteata | Strawflower, golden everlasting daisy | Asteraceae |
| Brassavola nodosa | Lady of the night | Orchidaceae |
| Brassica juncea | Mustard cabbage | Brassicaceae |
| Brassica nigra | Black mustard, makeke | Brassicaceae |
| Brassica oleracea | Kale, brussel sprout | Brassicaceae |
| Brassica oleracea var. alboglabra | Kailaan | Brassicaceae |
| Brassica oleracea var. botrytis | Broccoli, cauliflower | Brassicaceae |
| Brassica oleracea var. capitata | Cabbage | Brassicaceae |
| Brassica oleracea var. gongylodes | Kohlrabi | Brassicaceae |
| Brassica rapa | Chinese cabbage | Brassicaceae |
| Brassica rapa var. chinensis | Bok choi, pak choi, pak choy, pok choi | Brassicaceae |
| Brassica rapa var. parachinensis | Choy sum, Chinese flowering cabbage | Brassicaceae |
| Brassica rapa var. rapa | Turnip | Brassicaceae |
| Brassica rapa var. rosularis | Tatsoi | Brassicaceae |
| Brassica sp. | Unknown brassica | Brassicaceae |
| Brassolaeliocattleya sp. | Brassavola, Cattleya and Leilia hybrid orchid | Orchidaceae |
| Brexia madagascariensis | Brexia | Celastraceae |
| Breynia disticha | Snowbush, foliage flower | Phyllanthaceae |
| Brighamia insignis | Olulu, pu aupaka, alula, haha | Campanulaceae |
| Brighamia rockii | Pua ala, alula, haha | Campanulaceae |
| Brighamia sp. | Brighamia | Campanulaceae |
| Briza maxima | Big quaking grass | Poaceae |
| Briza minor | Little quaking grass | Poaceae |
| Bromus catharticus | Rescue grass | Poaceae |
| Bromus diandrus | Ripgut grass | Poaceae |
| Bromus hordeaceus | Soft chess | Poaceae |
| Bromus rubens | Red brome | Poaceae |
| Bromus sp. | Bromus | Poaceae |
| Bromus tectorum | Cheat grass | Poaceae |
| Broussaisia arguta | Kanawao | Hydrangeaceae |
| Broussonetia luzonica | Alakon, alucon, himbabao | Moraceae |
| Broussonetia papyrifera | Wauke | Moraceae |
| Brownea sp. | Brownea | Fabaceae |
| Brugmansia sp. | Angel's trumpet | Solanaceae |
| Brunfelsia americana | Lady of the night | Solanaceae |
| Brunfelsia australis | Yesterday today and tomorrow plant | Solanaceae |
| Brunfelsia latifolia | Yesterday-today-tomorrow, kiss me quick | Solanaceae |
| Brunfelsia sp. | Brunfelsia | Solanaceae |
| Buchloe dactyloides | Buffalo grass | Poaceae |
| Bucida buceras | Jucaro, geometry tree | Combretaceae |
| Buddleja asiatica | Dog tail | Scrophulariaceae |
| Buddleja davidii | Butterfly bush | Scrophulariaceae |
| Buddleja madagascariensis | Smoke bush | Scrophulariaceae |
| Buddleja salviifolia | South African sage wood, sage leaf buddleja | Scrophulariaceae |
| Buddleja sp. | Buddleia | Scrophulariaceae |
| Bulbine frutescens | Stalked bulbine | Asphodelaceae |
| Bunchosia argentea | Peanut butter fruit | Malpighiaceae |
| Burbidgea schizocheila | Golden brush, golden ginger | Zingiberaceae |
| Bursera simaruba | Gumbo limbo, West Indian birch | Burseraceae |
| Butia capitata | Pindo palm, jelly palm | Arecaceae |
| Buxus microphylla var. japonica | Japanese boxwood | Buxaceae |
| Buxus sempervirens | Boxwood | Buxaceae |
| Buxus sp. | Boxwood | Buxaceae |
| Caesalpinia bonduc | Gray nickers | Fabaceae |
| Caesalpinia decapetala | Cat's claw, wait a bit, Mysore thorn, pua kelekino | Fabaceae |
| Caesalpinia ferrea | Brazilian ironwood | Fabaceae |
| Caesalpinia kavaiensis | Uhi uhi, kawau, kea | Fabaceae |
| Caesalpinia pulcherrima | Ohai alii, dwarf poinciana, pride of Barbados, bird of paradise | Fabaceae |
| Cajanus cajan | Pigeon pea, dahl | Fabaceae |
| Caladium bicolor | Caladium, heart of Jesus | Araceae |
| Caladium lindenii | Indian kale | Araceae |
| Caladium sp. | Caladium | Araceae |
| Calamagrostis expansa | Reedgrass | Poaceae |
| Calathea crotalifera | Rattlesnake plant | Marantaceae |
| Calathea cylindrica | Green ice | Marantaceae |
| Calathea lutea | Cuban cigar, pampano | Marantaceae |
| Calathea orbifolia | Prayer plant | Marantaceae |
| Calathea roseopicta | Rose painted calathea, medallion | Marantaceae |
| Calathea sp. | Prayers plant | Marantaceae |
| Calathea zebrina | Zebra plant | Marantaceae |
| Calendula officinalis | Pot marigold | Asteraceae |
| Calibrachoa sp. | Calibrachoa | Solanaceae |
| Calliandra haematocephala | Red powderpuff | Fabaceae |
| Calliandra houstoniana var. calothyrsus | Tree calliandra | Fabaceae |
| Calliandra sp. | Calliandra | Fabaceae |
| Calliandra surinamensis | Surinam powderpuff, pink powderpuff | Fabaceae |
| Callicarpa americana | American beautyberry | Verbenaceae |
| Callisia fragrans | Basket plant | Commelinaceae |
| Callisia repens | Inch plant | Commelinaceae |
| Callistemon citrinus | Red bottle brush, lemon bottle brush | Myrtaceae |
| Callistemon sp. | Bottle brush | Myrtaceae |
| Callistemon viminalis | Weeping bottle brush | Myrtaceae |
| Callitris sp. | Cypress-pine | Cupressaceae |
| Calocedrus decurrens | Incense cedar | Cupressaceae |
| Calodendrum capense | Cape chestnut | Rutaceae |
| Calophyllum inophyllum | Kamani | Calophyllaceae |
| Calophyllum soulattri | Nicobar canoe tree | Calophyllaceae |
| Calopogonium galactioides | Calopogonium | Fabaceae |
| Calotropis gigantea | Crown flower | Apocynaceae |
| Calotropis procera | Small crown flower | Apocynaceae |
| Calyptocarpus vialis | Calyptocarpus, straggler daisy | Asteraceae |
| Calyptrocalyx hollrungii | New Guinea palm | Arecaceae |
| Calyptrocalyx sp. | Calyptocalyx | Arecaceae |
| Calyptrogyne sp. | Calyptrogyne | Arecaceae |
| Calystegia soldanella | Sea bindweed | Convolvulaceae |
| Camellia japonica | Camellia | Theaceae |
| Camellia sinensis | Tea | Theaceae |
| Cananga odorata | Ylang-ylang | Annonaceae |
| Canarium ovatum | Pili nut | Burseraceae |
| Canavalia cathartica | Maunaloa | Fabaceae |
| Canavalia hawaiiensis | Awikiwiki, puakauhi | Fabaceae |
| Canavalia molokaiensis | Awikiwiki | Fabaceae |
| Canavalia pubescens | Awikiwiki | Fabaceae |
| Canavalia rosea | Beach bean, bay bean | Fabaceae |
| Canavalia sericea | Silky jackbean | Fabaceae |
| Canna flaccida | Golden canna | Cannaceae |
| Canna glauca | Water canna | Cannaceae |
| Canna indica | Indian shot, canna | Cannaceae |
| Canna jaegeriana | Caribbean canna | Cannaceae |
| Canna sp. | Canna | Cannaceae |
| Canna x generalis | Garden canna | Cannaceae |
| Capparis sandwichiana | Maiapilo, pua pilo, pilo, Hawaiian caper bush | Brassicaceae |
| Capsella bursa-pastoris | Sheperd's purse | Brassicaceae |
| Capsicum annuum | Bell pepper, chili pepper | Solanaceae |
| Capsicum baccatum | Bishop's crown, orchid pepper | Solanaceae |
| Caralluma hesperidum | Caralluma | Asclepiadaceae |
| Carapa guianensis | Andiroba, crabwood | Meliaceae |
| Cardamine flexuosa | Bittercress | Brassicaceae |
| Cardiospermum sp. | Heartseed, balloon vine, poniu, pohuehue uka | Sapindaceae |
| Carex alligata | Carex | Cyperaceae |
| Carex buchananii | Fox red curly sedge, red rooster | Cyperaceae |
| Carex comans | Hair sedge | Cyperaceae |
| Carex hachijoensis | Evergold sedge | Cyperaceae |
| Carex longii | Carex | Cyperaceae |
| Carex macloviana subsp. subfusca | Carex | Cyperaceae |
| Carex meyenii | Carex sedge | Cyperaceae |
| Carex sp. | Carex | Cyperaceae |
| Carex wahuensis | Carex | Cyperaceae |
| Carica papaya | Papaya, pawpaw | Caricaceae |
| Carissa macrocarpa | Natal plum | Apocynaceae |
| Carludovica palmata | Panama-hat palm | Cyclanthaceae |
| Carludovica sp. | Jungle drum | Cyclanthaceae |
| Carmona retusa | Fukien tea, Philippine tea | Ehretiaceae |
| Carpentaria acuminata | Carpentaria palm | Arecaceae |
| Carpobrotus sp. | Ice plant, hottentot fig | Aizoaceae |
| Carya illinoinensis | Pecan | Juglandaceae |
| Caryota gigas | Giant fish tail palm | Arecaceae |
| Caryota mitis | Clumping fish tail palm | Arecaceae |
| Caryota no | Giant fishtail palm | Arecaceae |
| Caryota sp. | Fish tail palm | Arecaceae |
| Caryota urens | Solitary fish tail palm | Arecaceae |
| Casimiroa edulis | White sapote | Rutaceae |
| Cassia fistula | Golden shower tree | Fabaceae |
| Cassia grandis | Pink shower tree, coral shower, horse shower | Fabaceae |
| Cassia javanica | Pink shower tree | Fabaceae |
| Cassia roxburghii | Ceylon senna, red cassia | Fabaceae |
| Cassia sp. | Shower tree | Fabaceae |
| Cassia x nealiae | Rainbow shower tree | Fabaceae |
| Cassytha filiformis | Kaunaoa pehu | Lauraceae |
| Castanea dentata | American chestnut | Fagaceae |
| Castanea sp. | Chestnut | Fagaceae |
| Castanospermum australe | Moreton Bay chestnut, Australian chestnut | Fabaceae |
| Castilleja arvensis | Indian paintbrush | Orobanchaceae |
| Casuarina equisetifolia | Ironwood | Casuarinaceae |
| Casuarina glauca | Longleaf ironwood | Casuarinaceae |
| Catalpa longissima | Yoke-wood | Bignoniaceae |
| Catharanthus roseus | Madagascar periwinkle, kihapai, vinca | Apocynaceae |
| Cattleya sp. | Cattleya orchid | Orchidaceae |
| Cecropia obtusifolia | Guarumo, trumpet tree | Urticaceae |
| Cedrela odorata | West Indian cedar | Meliaceae |
| Cedrela serrata | Hill toon | Meliaceae |
| Ceiba pentandra | Kapok | Bombacaceae |
| Ceiba speciosa | Floss silk tree | Malvaceae |
| Celosia argentea | Plumed cockscomb, silver cockscomb | Amaranthaceae |
| Celosia sp. | Cockscomb, wool flowers | Amaranthaceae |
| Cenchrus advena | Purple fountain grass, foreign fountain grass | Poaceae |
| Cenchrus agrimonioides var. agrimonioides | Kamanomano | Poaceae |
| Cenchrus ciliaris | Buffel grass | Poaceae |
| Cenchrus clandestinus | Kikuyu grass | Poaceae |
| Cenchrus echinatus | Sandbur | Poaceae |
| Cenchrus polystachios | Missiongrass, thin napiergrass, feathery pennisetum | Poaceae |
| Cenchrus purpureus | Cane grass, elephant grass, napier grass | Poaceae |
| Cenchrus purpureus x americanus | Pearl millet x dwarf napier | Poaceae |
| Cenchrus purpureus x glaucum | Pearl millet x banagrass hybrid | Poaceae |
| Cenchrus setaceus | Fountain grass | Poaceae |
| Cenchrus setigerus | Cenchrus | Poaceae |
| Cenchrus sp. | Unknown cenchrus grass | Poaceae |
| Cenchrus tribuloides | Sanddune sandbur | Poaceae |
| Centaurea cyanus | Garden cornflower, bachelor's button | Asteraceae |
| Centaurea melitensis | Napa thistle, yellow star thistle | Asteraceae |
| Centaurium erythraea subsp. erythraea | Bitter herb | Gentianaceae |
| Centella asiatica | Asiatic pennywort, gotu kola | Apiaceae |
| Centranthus ruber | Valerian | Valerianaceae |
| Centratherum punctatum subsp. punctatum | Centratherum | Asteraceae |
| Centrosema molle | Soft butterfly pea | Fabaceae |
| Cerastium fontanum subsp. vulgare | Mouse-ear chickweed | Caryophyllaceae |
| Cerastium glomeratum | Cerastium | Caryophyllaceae |
| Ceratonia siliqua | Carob, St. John's Bread, kelakio | Fabaceae |
| Ceratopetalum gummiferum | New South Wales Christmas tree | Cunoniaceae |
| Ceratophyllum demersum | Coonstail, rigid hornwort | Ceratophyllaceae |
| Ceratopteris thalictroides | Water sprite, Indian fern, water fern, oriental waterfern, and water hornfern | Pteridaceae |
| Cerbera manghas | Cerbera, reva | Apocynaceae |
| Cerbera sp. | Cerbera | Apocynaceae |
| Cercis canadensis | Eastern red bud | Fabaceae |
| Cereus hexagonus | Cereus | Cactaceae |
| Cereus uruguayanus | Hedge cactus | Cactaceae |
| Ceropegia woodii | Rosary vine, string of hearts | Asclepiadaceae |
| Ceroxylon alpinum | Andean wax palm | Arecaceae |
| Cestrum aurantiacum | Orange cestrum, orange jessamine | Solanaceae |
| Cestrum diurnum | Day cestrum | Solanaceae |
| Cestrum elegans | Pink cestrum, red cestrum, purple cestrum | Solanaceae |
| Cestrum nocturnum | Night cestrum, night blooming jasmine | Solanaceae |
| Cestrum sp. | Cestrum | Solanaceae |
| Cestrum x cultum | Purple cestrum | Solanaceae |
| Chaenomeles sp. | Flowering quince | Rosaceae |
| Chamaecrista nictitans | Partridge pea | Fabaceae |
| Chamaecyparis lawsoniana | Lawson cypress, Port Orford cedar | Cupressaceae |
| Chamaedorea cataractarum | Cascade palm, cat palm | Arecaceae |
| Chamaedorea elegans | Parlor palm, neanthe bella, good luck palm | Arecaceae |
| Chamaedorea metallica | Metal palm tree | Arecaceae |
| Chamaedorea seifrizii | Bamboo palm | Arecaceae |
| Chamaerops humilis | European fan palm | Arecaceae |
| Chambeyronia macrocarpa | Flame thrower palm, red feather palm | Arecaceae |
| Chamelaucium floriferum | Walpole was | Myrtaceae |
| Chamelaucium uncinatum | Geraldton wax flower | Myrtaceae |
| Charpentiera obovata | Papala | Amaranthaceae |
| Cheilanthes viridis | Green cliff brake | Pteridaceae |
| Cheirodendron trigynum | Olapa, lapalapa | Araliaceae |
| Chenopodium album | Lamb's quarters | Amaranthaceae |
| Chenopodium murale | Lamb's quarters | Amaranthaceae |
| Chenopodium oahuense | Aweoweo | Amaranthaceae |
| Chenopodium sp. | Chenopodium | Amaranthaceae |
| Chicorium intybus | Radicchio | Asteraceae |
| Chloranthus spicatus | Chicken feet, chicken foot orchid, pearl orchid | Chloranthaceae |
| Chloris barbata | Swollen fingergrass | Poaceae |
| Chloris gayana | Rhodes grass | Poaceae |
| Chloris radiata | Radiate fingergrass | Poaceae |
| Chloris sp. | Fingergrass | Poaceae |
| Chloris virgata | Feather fingergrass | Poaceae |
| Chlorophytum comosum | Spider plant, airplane plant | Liliaceae |
| Chlorophytum sp. | Chlorophytum | Liliaceae |
| Chorisia speciosa | Floss silk tree | Bombacaceae |
| Chrysalidocarpus lutescens | Areca palm, golden fruited palm | Arecaceae |
| Chrysanthemum sp. | Mums, chrysanthemum | Asteraceae |
| Chrysobalanus icaco | Cocoplum | Chrysobalanaceae |
| Chrysophyllum cainito | Star apple | Sapotaceae |
| Chrysophyllum oliviforme | Satin leaf | Sapotaceae |
| Chrysopogon aciculatus | Manienie ula, golden beardgrass | Poaceae |
| Chrysopogon zizanioides | Vetiver grass | Poaceae |
| Cibotium chamissoi | Hapuu | Cibotiaceae |
| Cibotium glaucum | Hapuu pulu | Cibotiaceae |
| Cibotium menziesii | Hapuu ii | Cibotiaceae |
| Cibotium sp. | Hapuu | Cibotiaceae |
| Cicer arietinum | Garbanzo bean, chickpea | Fabaceae |
| Cichorium endivia | Endive | Asteraceae |
| Cinchona calisaya | Ledger quinine | Rubiaceae |
| Cinchona pubescens | Quinine | Rubiaceae |
| Cinnamomum burmannii | Padang cassia | Lauraceae |
| Cinnamomum camphora | Camphor tree | Lauraceae |
| Cinnamomum sp. | Cinnamomum | Lauraceae |
| Cinnamomum verum | Cinnamon | Lauraceae |
| Cirsium vulgare | Bull thistle, pua kala | Asteraceae |
| Cissus amazonica | Amazon jungle vine | Vitaceae |
| Cissus nodosa | Javanese treebine | Vitaceae |
| Cissus rhombifolia | Grape ivy, oak leaf ivy | Vitaceae |
| Cissus rotundifolia | Arabian wax cissus, grape ivy | Vitaceae |
| Cissus verticillata | Princess vine | Vitaceae |
| Cistus sp. | Cistus, rock rose | Cistaceae |
| Cistus x purpureus | Orchid rock rose | Cistaceae |
| Citharexylum caudatum | Juniperberry | Verbenaceae |
| Citharexylum fruticosum | Florida fiddlewood | Verbenaceae |
| Citharexylum spinosum | Fiddlewood | Verbenaceae |
| Citrofortunella microcarpa | Calamondin, kalamansi | Rutaceae |
| Citrullus lanatus | Watermelon | Cucurbitaceae |
| Citrus aurantifolia | Mexican Lime, Key Lime | Rutaceae |
| Citrus aurantium | Seville orange, bitter orange | Rutaceae |
| Citrus australasica | Australian finger lime | Rutaceae |
| Citrus hystrix | Kaffir lime | Rutaceae |
| Citrus jambhiri | Rough lemon, jambhiri | Rutaceae |
| Citrus latifolia | Tahitian lime, Bearss lime, Persian lime | Rutaceae |
| Citrus limon | Lemon | Rutaceae |
| Citrus limon x medica | Ponderosa lemon | Rutaceae |
| Citrus limonia | Rangpur lime, kona lime | Rutaceae |
| Citrus maxima | Pomelo, pummelo, shaddok | Rutaceae |
| Citrus medica var. sarcodactylus | Citron, Buddha's hand | Rutaceae |
| Citrus meyeri | Meyer lemon | Rutaceae |
| Citrus paradisi x maxima | Hybrid grapefruit | Rutaceae |
| Citrus reticulata | Tangerine | Rutaceae |
| Citrus reticulata x sinensis | Tangor | Rutaceae |
| Citrus sinensis | Orange | Rutaceae |
| Citrus sp. | Citrus | Rutaceae |
| Citrus trifoliata | Trifoliate orange | Rutaceae |
| Citrus unshiu | Satsuma mandarin | Rutaceae |
| Citrus x floridana | Limequat | Rutaceae |
| Citrus x paradisi | Grapefruit | Rutaceae |
| Citrus x tangelo | Tangelo | Rutaceae |
| Cladium jamaicense | Uki, saw grass | Cyperaceae |
| Claoxylon sandwicense | Poola | Euphorbiaceae |
| Cleistocactus winteri | Golden rat tail | Cactaceae |
| Clematis sp. | Clematis | Ranunculaceae |
| Cleome gynandra | Wild spider flower, spider wisp, honohina, iliohu | Cleomaceae |
| Clermontia arborescens | Oha wai nui, oha wai, oha, haha | Campanulaceae |
| Clermontia arborescens subsp. waihiae | Oha wai nui | Campanulaceae |
| Clermontia grandiflora subsp. grandiflora | Oha wai | Campanulaceae |
| Clermontia kakeana | Oha wai, oha, haha | Campanulaceae |
| Clermontia micrantha | Oha wai, haha | Campanulaceae |
| Clermontia samuelii subsp. samuelii | Oha wai | Campanulaceae |
| Clermontia sp. | Oha wai, oha, haha | Campanulaceae |
| Clerodendrum aculeatum | Prickly myrtle | Lamiaceae |
| Clerodendrum buchananii var. fallax | Red clerodendrum, pagoda-flower | Lamiaceae |
| Clerodendrum bungei | Rose glorybower | Lamiaceae |
| Clerodendrum calamitosum | White butterfly | Lamiaceae |
| Clerodendrum chinense | Pikake hohono, Chinese glory bower | Lamiaceae |
| Clerodendrum indicum | Clerodendrum | Lamiaceae |
| Clerodendrum inerme | Seaside clerodendrum | Lamiaceae |
| Clerodendrum macrostegium | Velvetleaf glorybower | Lamiaceae |
| Clerodendrum myricoides | Blue butterfly flower, blue flowered clerodendrum | Lamiaceae |
| Clerodendrum paniculatum | Pagoda flower | Lamiaceae |
| Clerodendrum quadriloculare | Starburst, shooting star | Lamiaceae |
| Clerodendrum sp. | Clerodendrum | Lamiaceae |
| Clerodendrum splendens | Flaming glorybower | Lamiaceae |
| Clerodendrum thomsonae | Bleeding heart | Lamiaceae |
| Clerodendrum x speciosum | Java glory vine, heart vine | Lamiaceae |
| Clidemia hirta | Koster's curse | Melastomataceae |
| Clitoria ternatea | Butterfly pea | Fabaceae |
| Clivia miniata | Bush lily, Kaffir lily | Amaryllidaceae |
| Clusia rosea | Autograph tree | Clusiaceae |
| Clytostoma callistegioides | Clytostoma | Bignoniaceae |
| Cnidoscolus aconitifolius | Spinach tree, chaya | Euphorbiaceae |
| Cobaea scandens | Cup and saucer vine | Polemoniaceae |
| Coccinia grandis | Ivy gourd, tam lung | Cucurbitaceae |
| Coccoloba diversifolia | Pigeon plum | Polygonaceae |
| Coccoloba uvifera | Sea grape | Polygonaceae |
| Coccothrinax argentea | Coccothrinax | Arecaceae |
| Coccothrinax barbadensis | Silver thatch palm | Arecaceae |
| Coccothrinax crinita | Old man palm | Arecaceae |
| Coccothrinax sp. | Thatch palm | Arecaceae |
| Cocculus orbiculatus | Huehue, hue, hueie, inalua | Menispermaceae |
| Cochlospermum vitifolium | Buttercup tree | Bixaceae |
| Cocos nucifera | Coconut palm, niu | Arecaceae |
| Codiaeum variegatum | Croton | Euphorbiaceae |
| Coffea arabica | Arabian coffee | Rubiaceae |
| Coix lachryma-jobi | Job's tears | Poaceae |
| Cola nitida | Cola nut, kola nut, cola tree | Malvaceae |
| Coleonema pulchellum | Breath of Heaven | Rutaceae |
| Coleonema sp. | Breath of heaven | Rutaceae |
| Coleus barbatus | Blue spur flower | Lamiaceae |
| Colletia paradoxa | Barbed wire bush, anchor plant | Rhamnaceae |
| Colocasia esculenta | Taro, kalo | Araceae |
| Colocasia sp. | Colocasia | Araceae |
| Colubrina asiatica | Anapanapa | Rhamnaceae |
| Colubrina oppositifolia | Kauila, kauwila | Rhamnaceae |
| Colvillea racemosa | Coville's glory | Fabaceae |
| Combretum coccineum | Flamevine, scarlet comb, rangoon creeper | Combretaceae |
| Combretum constrictum | Combretum | Combretaceae |
| Commelina benghalensis | Hairy honohono | Commelinaceae |
| Commelina diffusa | Honohono | Commelinaceae |
| Congea griffithiana | Congea, pink sandpaper vine, shower orchid | Verbenaceae |
| Congea tomentosa | Shower orchid, wooly congea | Verbenaceae |
| Coniogramme pilosa | Loulu | Pteridaceae |
| Conocarpus erectus | Button mangrove | Combretaceae |
| Conyza bonariensis | Hairy horseweed, lani wela | Asteraceae |
| Conyza canadensis | Horseweed, lani wela | Asteraceae |
| Conyza canadensis var. canadensis | Horseweed, lani wela | Asteraceae |
| Conyza canadensis var. pusilla | Horseweed, lani wela | Asteraceae |
| Coprosma ernodeoides | Kukaenene | Rubiaceae |
| Coprosma foliosa | Pilo | Rubiaceae |
| Coprosma montana | Pilo | Rubiaceae |
| Coprosma ochracea | Pilo | Rubiaceae |
| Coprosma pubens | Pilo | Rubiaceae |
| Coprosma repens | Looking glass plant | Rubiaceae |
| Coprosma sp. | Pilo | Rubiaceae |
| Coprosma ternata | Pilo | Rubiaceae |
| Corchorus olitorius | Saluyot, bai po | Malvaceae |
| Cordia sebestena | Kou haole, geiger tree | Cordiaceae |
| Cordia subcordata | Kou | Cordiaceae |
| Cordyline australis | Cabbage tree | Asparagaceae |
| Cordyline fruticosa | Ti leaf, ki | Asparagaceae |
| Cordyline sp. | Cordyline | Asparagaceae |
| Cordyline stricta | Narrow leaved palm lily | Asparagaceae |
| Coreopsis lanceolata | Tickseed, kookoolau haole | Asteraceae |
| Coreopsis tinctoria | Golden tickseed | Asteraceae |
| Coriandrum sativum | Coriander, cilantro | Apiaceae |
| Coronopus didymus | Swinecress | Brassicaceae |
| Cortaderia jubata | Pampas grass | Poaceae |
| Cortaderia selloana | Pampas grass | Poaceae |
| Cortaderia sp. | Pampas grass | Poaceae |
| Corymbia calophylla | Marri, red gum | Myrtaceae |
| Corymbia citriodora | Lemon-scented gum | Myrtaceae |
| Corymbia ficifolia | Red-flowering gum | Myrtaceae |
| Corymbia gummifera | Bloodwood | Myrtaceae |
| Corypha umbraculifera | Talipot palm | Arecaceae |
| Cosmos bipinnatus | Common cosmos, Mexican aster | Asteraceae |
| Cosmos sulphureus | Orange cosmos | Asteraceae |
| Costus barbatus | Red tower ginger, spiral ginger, red velvet ginger | Costaceae |
| Costus comosus | Red tower ginger, spiral ginger | Costaceae |
| Costus dubius | African costus | Costaceae |
| Costus malortieanus | Spiral ginger | Costaceae |
| Costus sp. | Costus | Costaceae |
| Costus speciosus | Crape ginger, crepe ginger, malay ginger, spiral flag | Costaceae |
| Costus stenophyllus | Zebra costus, bamboo ginger | Costaceae |
| Costus tapenbeckianus | Costus | Costaceae |
| Costus woodsonii | Scarlet spiral flag | Costaceae |
| Cotoneaster aff. harrovianus | Tree cotoneaster | Rosaceae |
| Cotoneaster pannosus | Cotoneaster | Rosaceae |
| Cotula australis | Australian brass buttons | Asteraceae |
| Couroupita guianensis | Cannonball tree | Lecythidaceae |
| Crassocephalum crepidioides | Crassocephalum | Asteraceae |
| Crassula capitella | Campfire crassula | Crassulaceae |
| Crassula ericoides | Crassula | Crassulaceae |
| Crassula mucosa | Watch chain, lizard's tail | Crassulaceae |
| Crassula multicava | Pitted crassula, star crassula | Crassulaceae |
| Crassula ovata | Jade plant | Crassulaceae |
| Crassula perfoliata var. falcata | Propeller plant, red crassula | Crassulaceae |
| Crassula perforata | String of buttons | Crassulaceae |
| Crassula pubescens subsp. radicans | Large red carpet stonecrop | Crassulaceae |
| Crassula sp. | Crassula | Crassulaceae |
| Crepidomanes draytonianum | Crepidomanes | Hymenophyllaceae |
| Crepis capillaris | Hawk's beard | Asteraceae |
| Crescentia cujete | Calabash tree, gourd tree | Bignoniaceae |
| Cressa truxillensis | Makihi, cressa | Convolvulaceae |
| Crinum angustum | Queen Emma lily | Liliaceae |
| Crinum asiaticum | Spider lily | Liliaceae |
| Crinum augustum | Giant spider lily, Queen Emma lily | Amaryllidaceae |
| Crinum sp. | Spider lily | Liliaceae |
| Crocosmia x crocosmiiflora | Montbretia | Iridaceae |
| Crossandra infundibuliformis | Crossandra | Acanthaceae |
| Crotalaria agatiflora | Canary bird bush, rattlebox | Fabaceae |
| Crotalaria assamica | Rattle pod | Fabaceae |
| Crotalaria incana | Fuzzy rattle pod | Fabaceae |
| Crotalaria juncea | Sunn hemp | Fabaceae |
| Crotalaria pallida | Smooth rattle pod | Fabaceae |
| Crotalaria pumila | Small rattle pod | Fabaceae |
| Crotalaria sp. | Rattle pod | Fabaceae |
| Crotalaria trichotoma | Curara-pea | Fabaceae |
| Croton guatemalensis | Copalchi | Euphorbiaceae |
| Croton sp. | Croton | Euphorbiaceae |
| Cryptomeria japonica | Japanese tsugi pine, Japanese-cedar | Cupressaceae |
| Cryptostegia grandiflora | Rubber vine | Apocynaceae |
| Cryptostegia madagascariensis | Rubber vine | Apocynaceae |
| Cryptostegia madagascariensis var. glabberima | Rubber vine | Apocynaceae |
| Cryptostegia sp. | Rubber vine | Apocynaceae |
| Ctenanthe oppenheimiana | Never never plant | Marantaceae |
| Cucumis dipsaceus | Teasel gourd, wild cucumber | Cucurbitaceae |
| Cucumis melo | Cantaloupe, honeydew melon | Cucurbitaceae |
| Cucumis metuliferus | Horned melon | Cucurbitaceae |
| Cucumis sativus | Bush cucumber | Cucurbitaceae |
| Cucurbita maxima | Pumpkin, winter squash | Cucurbitaceae |
| Cucurbita moschata | Butternut squash | Cucurbitaceae |
| Cucurbita pepo | Squash, pumpkin | Cucurbitaceae |
| Cucurbita pepo var. ovifera | Ornamental gourd, field pumpkin | Cucurbitaceae |
| Cunninghamia lanceolata | China fir | Taxodiaceae |
| Cupaniopsis anacardioides | Carrotwood | Sapindaceae |
| Cuphea carthagenensis | Tarweed, Colombian cuphea | Lythraceae |
| Cuphea hyssopifolia | False heather, Mexican heather | Lythraceae |
| Cuphea ignea | Cigar flower, firecracker plant | Lythraceae |
| Cuphea llavea | Bat faced cuphea | Lythraceae |
| Cuphea micropetala | Mexican cigar plant | Lythraceae |
| Cuphea salvadorensis | Christmas cigar flower | Lythraceae |
| Cuphea sp. | Cuphea | Lythraceae |
| Cuphea subuligera | Mauve cuphea, lavender cuphea | Lythraceae |
| Cupressus arizonica | Arizona cypress | Cupressaceae |
| Cupressus macrocarpa | Monterey cypress | Cupressaceae |
| Cupressus sempervirens | Italian cypress, Mediterranean cypress | Cupressaceae |
| Cupressus sp. | Cypress | Cupressaceae |
| Curcuma australasica | Aussie plume ginger | Zingiberaceae |
| Curcuma cordata | Jewel of Thailand | Zingiberaceae |
| Curcuma elata | Hidden cone ginger, giant plume ginger | Zingiberaceae |
| Curcuma longa | Turmeric, olena | Zingiberaceae |
| Cuscuta campestris | Western field dodder | Convolvulaceae |
| Cuscuta sandwichiana | Kaunaoa | Convolvulaceae |
| Cyanea aculeatiflora | Prickly-flowered haha | Campanulaceae |
| Cyanea asplenifolia | Haha, cyanea | Campanulaceae |
| Cyanea duvalliorum | Haha, cyanea | Campanulaceae |
| Cyanea elliptica | Haha, cyanea | Campanulaceae |
| Cyanea gibsonii | Haha, cyanea | Campanulaceae |
| Cyanea hamatiflora subsp. hamatiflora | Haha | Campanulaceae |
| Cyanea horrida | Haha, cyanea | Campanulaceae |
| Cyanea kunthiana | Haha, cyanea | Campanulaceae |
| Cyanea lobata | Haha, cyanea | Campanulaceae |
| Cyanea macrostegia | Haha, cyanea | Campanulaceae |
| Cyanea magnicalyx | Haha, cyanea | Campanulaceae |
| Cyanea maritae | Haha, cyanea | Campanulaceae |
| Cyanea profuga | Haha, cyanea | Campanulaceae |
| Cyanea scabra | Haha | Campanulaceae |
| Cyanea sp. | Haha, cyanea | Campanulaceae |
| Cyanthillium cinereum | Little ironweed | Asteraceae |
| Cycas circinalis | Sago palm | Cycadaceae |
| Cycas revoluta | Cycad, sago palm | Cycadaceae |
| Cyclamen persicum | Cyclamen | Primulaceae |
| Cyclanthus bipartitus | Split leaf cyclanthus | Cyclanthaceae |
| Cyclosorus cyatheoides | Kikawaio | Thelypteridaceae |
| Cyclosorus dentatus | Downy wood fern | Thelypteridaceae |
| Cyclosorus interruptus | Neke | Thelypteridaceae |
| Cyclosorus parasiticus | Christella | Thelypteridaceae |
| Cyclosorus sandwicensis | Hoio kula | Thelypteridaceae |
| Cyclosorus sp. | Christella | Thelypteridaceae |
| Cyclosorus x intermedia | Hybrid christella | Thelypteridaceae |
| Cyclospermum leptophyllum | Fir-leaved celery | Apiaceae |
| Cycnoches cooperi x herrenhausen | Cycnoches | Orchidaceae |
| Cydonia oblonga | Quince | Rosaceae |
| Cylindropuntia cholla | Chain link cholla | Cactaceae |
| Cymbalaria muralis | Ivy leaved toadflax, Kenilworth ivy | Plantaginaceae |
| Cymbidium dayanum | Day's cymbidium | Orchidaceae |
| Cymbidium sp. | Boat orchids | Orchidaceae |
| Cymbopogon citratus | Lemon grass | Poaceae |
| Cymbopogon refractus | Barbwire grass | Poaceae |
| Cynara scolymus | Globe artichoke | Asteraceae |
| Cynodon dactylon | Bermuda grass | Poaceae |
| Cynodon nlemfuensis | African Bermudagrass | Poaceae |
| Cynoglossum amabile | Chinese forget me not, hound's toungue | Boraginaceae |
| Cynometra iripa | Wrinkled pod mangrove | Fabaceae |
| Cyperus aggregatus | Inflatedscale flatsedge | Cyperaceae |
| Cyperus compressus | Cyperus | Cyperaceae |
| Cyperus cyperinus | Cyperus | Cyperaceae |
| Cyperus difformis | Cyperus | Cyperaceae |
| Cyperus gracilis | McCoy grass | Cyperaceae |
| Cyperus haspan | Cyperus | Cyperaceae |
| Cyperus hillebrandii | Cyperus | Cyperaceae |
| Cyperus hillebrandii subsp. decipiens | Cyperus | Cyperaceae |
| Cyperus hillebrandii subsp. hillebrandii | Cyperus | Cyperaceae |
| Cyperus hypochlorus var. hypochlorus | Ahuawa | Cyperaceae |
| Cyperus involucratus | Umbrella sedge, ahuawa haole | Cyperaceae |
| Cyperus javanicus | Ahuawa | Cyperaceae |
| Cyperus laevigatus | Makaloa | Cyperaceae |
| Cyperus papyrus | Papyrus sedge | Cyperaceae |
| Cyperus pennatiformis var. bryanii | Cyperus | Cyperaceae |
| Cyperus pennatiformis var. pennatiformis | Cyperus | Cyperaceae |
| Cyperus phleoides | Cyperus | Cyperaceae |
| Cyperus polystachyos | Pycreus | Cyperaceae |
| Cyperus rotundus | Purple nut sedge | Cyperaceae |
| Cyperus sp. | Sedge | Cyperaceae |
| Cyperus sphacelatus | Roadside flatsedge | Cyperaceae |
| Cyperus stoloniferus | Cyperus | Cyperaceae |
| Cyperus trachysanthos | Puukaa | Cyperaceae |
| Cyrtandra filipes | Cyrtandra | Gesneriaceae |
| Cyrtandra grayi | Cyrtandra | Gesneriaceae |
| Cyrtandra oxybapha | Haiwale, kanawao keokeo | Gesneriaceae |
| Cyrtandra platyphylla | Ilihia | Gesneriaceae |
| Cyrtandra sp. | Cyrtandra | Gesneriaceae |
| Cyrtocymura scorpioides | Erva-prea | Asteraceae |
| Cyrtomium caryotideum | Kaapeape | Dryopteridaceae |
| Cyrtomium falcatum | Holly fern | Dryopteridaceae |
| Cyrtostachys renda | Sealing wax palm | Arecaceae |
| Cystopteris douglasii | Cystopteris | Athyriaceae |
| Cytisus palmensis | Broom, tagasaste | Fabaceae |
| Cytisus scoparius | Scotch broom | Fabaceae |
| Dactylis glomerata | Cocksfoot | Poaceae |
| Dactyloctenium aegyptium | Beach wiregrass | Poaceae |
| Dahlia coccinea | Scarlet flowered dahlia | Asteraceae |
| Dahlia imperialis | Tree dahlia | Asteraceae |
| Dahlia sp. | Dahlia | Asteraceae |
| Dahlia x hortensis | Dahlia | Asteraceae |
| Dais cotinifolia | Pompom tree | Thymelaeaceae |
| Dalbergia retusa | Cocobolo, rosewood | Fabaceae |
| Dalbergia sissoo | Indian rosewood | Fabaceae |
| Dalechampia dioscoreifolia | Purple wings, bow tie vine, butterfly vine | Euphorbiaceae |
| Dasylirion wheeleri | Desert spoon | Asparagaceae |
| Datura stramonium | Jimson weed | Solanaceae |
| Daucus carota subsp. carota | Queen Anne’s lace, wild carrot | Apiaceae |
| Daucus carota subsp. sativus | Carrot | Apiaceae |
| Davallia tyermannii | White rabbit's foot fern, bear's foot fern | Davalliaceae |
| Delairea odorata | Cape ivy, German ivy | Asteraceae |
| Delissea kauaiensis | Delissea | Campanulaceae |
| Delissea rhytidosperma | Delissea | Campanulaceae |
| Delissea sp. | Delissea | Campanulaceae |
| Delonix elata | White poinciana, creamy peacock flower | Fabaceae |
| Delonix regia | Royal poinciana | Fabaceae |
| Dendranthema x grandiflorum | Garden mum, chrysanthemum, florists daisy | Asteraceae |
| Dendrobium nobile | Cane orchid | Orchidaceae |
| Dendrobium sp. | Orchid | Orchidaceae |
| Dendrobium wassellii | Furrowed pencil orchid | Orchidaceae |
| Dendrocalamus asper | Giant bamboo | Poaceae |
| Dendrochilum magnum | Dendrochilum | Orchidaceae |
| Deparia petersenii | Deparia | Athyriaceae |
| Deplanchea tetraphylla | Golden bouquet tree | Bignoniaceae |
| Derris elliptica | Poison vine | Fabaceae |
| Deschampsia nubigena | Hairgrass | Poaceae |
| Desmanthus pernambucanus | Slender mimosa | Fabaceae |
| Desmodium incanum | Spanish clover | Fabaceae |
| Desmodium intortum | Tick clover | Fabaceae |
| Desmodium sp. | Clover | Fabaceae |
| Desmodium tortuosum | Florida beggarweed | Fabaceae |
| Desmodium triflorum | Tick clover | Fabaceae |
| Dianella ensifolia | Variegated flax lily | Xanthorrhoeaceae |
| Dianella sandwicensis | Ukiuki | Xanthorrhoeaceae |
| Dianella sp. | Dianella | Asphodelaceae |
| Dianthus armeria | Deptford pink | Caryophyllaceae |
| Dianthus barbatus | Sweet-william | Caryophyllaceae |
| Dianthus caryophyllus | Carnation | Caryophyllaceae |
| Dianthus sp. | Dianthus | Caryophyllaceae |
| Diascia sp. | Diascia, red twinspur | Scrophulariaceae |
| Dichanthium aristatum | Angleton bluestem | Poaceae |
| Dichelachne crinita | Dichelachne | Poaceae |
| Dichelachne micrantha | Short-haired plum grass | Poaceae |
| Dichondra micrantha | Dichondra | Convolvulaceae |
| Dichorisandra thyrsiflora | Blue ginger | Commelinaceae |
| Dicliptera chinensis | Dicliptera, double folding wing plant | Acanthaceae |
| Dicranopteris linearis | Uluhe, staghorn fern | Gleicheniaceae |
| Dicranopteris linearis f. emarginata | Hairy uluhe, staghorn fern | Gleicheniaceae |
| Dictyosperma album | Red palm, common princess palm, hurricane palm | Arecaceae |
| Dieffenbachia maculata | Spotted dumb cane | Araceae |
| Dieffenbachia seguine | Dumb cane, dumb plant, seguine | Araceae |
| Dieffenbachia sp. | Dumb cane | Araceae |
| Dietes bicolor | Iris | Iridaceae |
| Dietes grandiflora | Large wild iris | Iridaceae |
| Dietes iridioides | African iris, fortnight lily, Morea iris | Iridaceae |
| Dietes sp. | African iris | Iridaceae |
| Digitaia violascens | Violet crab grass | Poaceae |
| Digitaria abyssinica | African couchgrass, Abyssinian finger grass | Poaceae |
| Digitaria ciliaris | Henry's crab grass | Poaceae |
| Digitaria eriantha | Pangola grass | Poaceae |
| Digitaria insularis | Sourgrass | Poaceae |
| Digitaria setigera | Kukae puaa | Poaceae |
| Digitaria sp. | Crab grass | Poaceae |
| Digitaria violascens | Violet crabgrass | Poaceae |
| Dillenia indica | Elephant apple, simpoh | Dilleniaceae |
| Dimocarpus longan | Longan, dragon's eye | Sapindaceae |
| Dioclea reflexa | Sea purse bean | Fabaceae |
| Dioclea wilsonii | Wilson's clusterpea | Fabaceae |
| Dionaea muscipula | Venus fly trap | Droseraceae |
| Dioon sp. | Dioon | Zamiaceae |
| Dioon spinulosum | Giant dioon, gum palm | Zamiaceae |
| Dioscorea alata | Winged yam, uhi | Dioscoreaceae |
| Dioscorea bulbifera | Bitter yam, air potato | Dioscoreaceae |
| Dioscorea pentaphylla | Fiveleaf yam, pia | Dioscoreaceae |
| Diospyros blancoi | Mabolo | Ebenaceae |
| Diospyros ebenum | Ebony | Ebenaceae |
| Diospyros kaki | Oriental persimmon | Ebenaceae |
| Diospyros nigra | Black sapote | Ebenaceae |
| Diospyros sandwicensis | Lama | Ebenaceae |
| Diospyros sp. | Persimmon | Ebenaceae |
| Diplazium esculentum | Paca, hoio, pohole | Athyriaceae |
| Diplazium molokaiense | Diplazium | Athyriaceae |
| Diplazium sandwichianum | Pohole, hoio | Athyriaceae |
| Diplopterygium pinnatum | Uluhe lau nui | Gleicheniaceae |
| Dissotis rotundifolia | Dissotis | Melastomataceae |
| Distichlis spicata | Distichlis, saltgrass | Poaceae |
| Dodonaea viscosa | ʻaʻaliʻi, aalii | Sapindaceae |
| Dombeya pulchra | Silver white pear | Malvaceae |
| Dombeya rotundifolia | Wild pear, South Africa wild pear | Malvaceae |
| Dombeya x cayeuxii | Tropical hydrangea | Malvaceae |
| Doodia kunthiana | Okupukupu | Blechnaceae |
| Dopatrium junceum | Horsefly's eye | Plantaginaceae |
| Doryopteris decipiens | Iwaiwa | Pteridaceae |
| Dovyalis abyssinica x hebecarpa | Tropical apricot, Florida gooseberry | Salicaceae |
| Dracaena angustifolia | Dracaena | Asparagaceae |
| Dracaena draco | Dragon tree | Asparagaceae |
| Dracaena fragrans | Fragrant dracaena | Asparagaceae |
| Dracaena marginata | Money tree | Asparagaceae |
| Dracaena reflexa | Dracaena | Asparagaceae |
| Dracaena sanderiana | Lucky bamboo | Asparagaceae |
| Dracaena sp. | Dracaena | Asparagaceae |
| Dryandra formosa | Showy dryandra | Proteaceae |
| Drymaria cordata var. pacifica | Pilipili | Caryophyllaceae |
| Drymophloeus beguinii | Drymophloeus palm | Arecaceae |
| Dryopteris erythrosora | Japanese shield fern, autumn fern | Dryopteridaceae |
| Dryopteris fusco-atra | Ii, dryopteris | Dryopteridaceae |
| Dryopteris fusco-atra var. fusco-atra | Ii, dryopteris | Dryopteridaceae |
| Dryopteris fusco-atra var. lamoureuxii | Ii, dryopteris | Dryopteridaceae |
| Dryopteris glabra | Kilau, hohiu | Dryopteridaceae |
| Dryopteris glabra var. hobdyana | Kilau, hohiu | Dryopteridaceae |
| Dryopteris rubiginosa | Nothoperanema | Dryopteridaceae |
| Dryopteris sandwicensis | Dryopteris | Dryopteridaceae |
| Dryopteris sp. | Dryopteris | Dryopteridaceae |
| Dryopteris tetrapinnata | Dryopteris | Dryopteridaceae |
| Dryopteris wallichiana | Laukahi | Dryopteridaceae |
| Dubautia arborea | Kupaoa | Asteraceae |
| Dubautia hanaulaensis | Kupaoa | Asteraceae |
| Dubautia laxa subsp. laxa | Kupaoa | Asteraceae |
| Dubautia linearis | Kupaoa | Asteraceae |
| Dubautia menziesii | Kupaoa | Asteraceae |
| Dubautia plantaginea subsp. humilis | Dubautia | Asteraceae |
| Dubautia plantaginea subsp. plantaginea | Kupaoa | Asteraceae |
| Dubautia platyphylla | Kupaoa | Asteraceae |
| Dubautia platyphylla x menziesii | Hybrid Dubautia | Asteraceae |
| Dubautia reticulata | Kupaoa | Asteraceae |
| Dubautia scabra | Kupaoa | Asteraceae |
| Dubautia scabra x menziesii | Kupaoa hybrid | Asteraceae |
| Dubautia sp. | Kupaoa | Asteraceae |
| Duranta erecta | Golden dewdrop | Verbenaceae |
| Durio zibethinus | Durian | Malvaceae |
| Dypsis ambositrae | Ambositra palm | Arecaceae |
| Dypsis cabadae | Cabada palm | Arecaceae |
| Dypsis decaryi | Madagascar three-sided palm, triangle palm | Arecaceae |
| Dypsis lastelliana | Teddy bear palm, red neck palm | Arecaceae |
| Dypsis leptocheilos | Teddy bear palm | Arecaceae |
| Dypsis madagascariensis | Malagasy palm | Arecaceae |
| Dypsis sp. | Dypsis | Arecaceae |
| Dyschoriste hygrophyloides | Bridal flower | Acanthaceae |
| Dysphania ambrosioides | Mexican tea | Amaranthaceae |
| Dysphania carinata | Chenopodium | Amaranthaceae |
| Echeveria runyonii | Echeveria | Crassulaceae |
| Echeveria secunda | Echeveria | Crassulaceae |
| Echeveria sp. | Echeveria, hen and chickens | Crassulaceae |
| Echeveria x imbricata | Hens and chicks | Crassulaceae |
| Echinacea purpurea | Purple cone flower, echinacea | Asteraceae |
| Echinocactus grusonii | Golden barrel cactus | Cactaceae |
| Echinochloa colona | Jungle-rice | Poaceae |
| Echinochloa crus-galli | Barnyard grass | Poaceae |
| Echinodorus cordifolius | Creeping burhead | Alismataceae |
| Echinopsis pachanoi | San Pedro cactus | Cactaceae |
| Echinopsis sp. | Hedgehog cactus, Easter lily cactus | Cactaceae |
| Echium sp. | Echium | Boraginaceae |
| Eclipta prostrata | False daisy | Asteraceae |
| Ehretia acuminata | Kodo wood | Boraginaceae |
| Ehrharta calycina | Perennial veldt grass | Poaceae |
| Ehrharta erecta | Panic veldt grass, ehrharta, Lamarck's ehrharta | Poaceae |
| Ehrharta stipoides | Meadow rice grass | Poaceae |
| Eichhornia crassipes | Water hyacinth | Pontederiaceae |
| Elaeagnus pungens | Thorny olive | Elaeagnaceae |
| Elaeis guineensis | African oil palm | Arecaceae |
| Elaeocarpus angustifolius | Blue-marble tree | Elaeocarpaceae |
| Elaeodendron orientale | False olive | Celastraceae |
| Elaphoglossum aemulum | Laukahi nunui | Dryopteridaceae |
| Elaphoglossum crassifolium | Hoe a Maui | Dryopteridaceae |
| Elaphoglossum paleaceum | Makue | Dryopteridaceae |
| Elaphoglossum parvisquameum | Hoe a Maui, Maui's paddle | Dryopteridaceae |
| Elaphoglossum sp. | Elaphoglossum | Dryopteridaceae |
| Elaphoglossum wawrae | Laukahi | Dryopteridaceae |
| Eleocharis calva | Spikerush | Cyperaceae |
| Eleocharis geniculata | Canada spikesedge | Cyperaceae |
| Eleocharis obtusa | Blunt spikerush | Cyperaceae |
| Eleocharis radicans | Rooted spikerush, radical fiber optic spikerush | Cyperaceae |
| Eleocharis sp. | Spikerush | Cyperaceae |
| Elephantopus mollis | Soft elephants foot | Asteraceae |
| Elettaria cardamomum | Cardomom | Zingiberaceae |
| Eleusine indica | Wire grass, goose grass | Poaceae |
| Embelia pacifica | Kilioe | Primulaceae |
| Emilia fosbergii | Pualele | Asteraceae |
| Emilia sp. | Pualele | Asteraceae |
| Encelia farinosa | Brittle brush | Asteraceae |
| Encephalartos sp. | Encephalartos | Zamiaceae |
| Ensete ventricosum | Abyssinian banana | Musaceae |
| Entada gigas | Sea heart bean | Fabaceae |
| Entada phaseoloides | St. Thomas bean | Fabaceae |
| Entada rheedei | Snuff box sea bean | Fabaceae |
| Enterolobium cyclocarpum | Elephant's earpod | Fabaceae |
| Epidendrum sp. | Buttonhole orchid | Orchidaceae |
| Epidendrum x obrienianum | Butterfly orchid | Orchidaceae |
| Epilobium billardierianum subsp. cinereum | Willow herb | Onagraceae |
| Epilobium ciliatum | Fringed willow herb | Onagraceae |
| Epiphyllum sp. | Orchid cactus, leaf cactus | Cactaceae |
| Epipremnum pinnatum | Golden pothos | Araceae |
| Equisetum hyemale | Horsetail, scouring rush | Equisetaceae |
| Equisetum sp. | Horsetail | Equisetaceae |
| Eragrostis amabilis | Love grass | Poaceae |
| Eragrostis atropioides | Eragrostis | Poaceae |
| Eragrostis brownei | Sheepgrass | Poaceae |
| Eragrostis cilianensis | Stink grass | Poaceae |
| Eragrostis curvula | Weeping lovegrass | Poaceae |
| Eragrostis deflexa | Eragrostis | Poaceae |
| Eragrostis grandis | Eragrostis | Poaceae |
| Eragrostis monticola | Kalamalo | Poaceae |
| Eragrostis paupera | Dwarf eragrostis | Poaceae |
| Eragrostis pectinacea | Carolina love grass | Poaceae |
| Eragrostis sp. | Eragrostis | Poaceae |
| Eragrostis superba | Wilmann love grass | Poaceae |
| Eragrostis unioloides | Eragrostis | Poaceae |
| Eragrostis variabilis | Emoloa, kawelu | Poaceae |
| Eranthemum pulchellum | Blue eranthemum, blue sage | Acanthaceae |
| Erechtites valerianifolia | Fireweed | Asteraceae |
| Erica baccans | Berry flower heath | Ericaceae |
| Erica lusitanica | Spanish heath | Ericaceae |
| Erica sp. | Unknown erica | Ericaceae |
| Erigeron bellioides | Daisy fleabane, bellorita | Asteraceae |
| Erigeron karvinskianus | Daisy fleabane | Asteraceae |
| Eriobotrya japonica | Loquat, pipa, Japanese plum | Rosaceae |
| Eriochloa procera | Tropical cupgrass | Poaceae |
| Eriochloa sp. | Eriochloa | Poaceae |
| Erodium cicutarium | Alfilaria, pin clover | Geraniaceae |
| Erodium moschatum | Musky stork's bill | Geraniaceae |
| Eruca vesicaria subsp. sativa | Arugula, rocket | Brassicaceae |
| Eryngium foetidum | Thorny coriander, stinkweed | Apiaceae |
| Erysimum linifolium | Alpine wall flower | Brassicaceae |
| Erythrina abyssinica | Red hot poker tree, coral tree | Fabaceae |
| Erythrina berteroana | Coralbean | Fabaceae |
| Erythrina bidwillii | Indian coral tree | Fabaceae |
| Erythrina caffra | Coastal coral tree | Fabaceae |
| Erythrina corallodendrum | Jamaica coral tree | Fabaceae |
| Erythrina crista-galli | Cock's spur coral tree | Fabaceae |
| Erythrina herbacea | Coral bean | Fabaceae |
| Erythrina latissima | Broad leaved coral tree | Fabaceae |
| Erythrina lysistemon | Coral tree, lucky bean | Fabaceae |
| Erythrina sandwicensis | Wiliwili | Fabaceae |
| Erythrina sp. | Erythrina | Fabaceae |
| Erythrina variegata | Indian coral tree | Fabaceae |
| Erythrina x bidwillii | Indian coral tree | Fabaceae |
| Escallonia rubra var. macrantha | Red claws, escallonia | Escalloniaceae |
| Eschscholzia californica | California poppy | Papaveraceae |
| Etlingera corneri | Rose of Siam | Zingiberaceae |
| Etlingera elatior | Torch ginger | Zingiberaceae |
| Etlingera hemisphaerica | Tulip ginger | Zingiberaceae |
| Eucalyptus amygdalina | Black peppermint | Myrtaceae |
| Eucalyptus botryoides | Bangalay | Myrtaceae |
| Eucalyptus camaldulensis | River red gum, Murray red gum | Myrtaceae |
| Eucalyptus cinerea | Argyle apple | Myrtaceae |
| Eucalyptus cladocalyx | Sugar gum | Myrtaceae |
| Eucalyptus crebra | Narrow-leaved ironbark | Myrtaceae |
| Eucalyptus deglupta | Rainbow eucalyptus | Myrtaceae |
| Eucalyptus globulus | Blue gum | Myrtaceae |
| Eucalyptus globulus subsp. globulus | Tasmanium blue gum | Myrtaceae |
| Eucalyptus goniocalyx | Mountain gray gum, long leaved box, bundy | Myrtaceae |
| Eucalyptus grandis | Flooded gum, red gum | Myrtaceae |
| Eucalyptus lehmanni | Bushy yate | Myrtaceae |
| Eucalyptus longifolia | Woollybutt | Myrtaceae |
| Eucalyptus obliqua | Messmate stringybark | Myrtaceae |
| Eucalyptus paniculata | Gray ironbark | Myrtaceae |
| Eucalyptus perriniana | Spinnig gum, round leaved snow gum | Myrtaceae |
| Eucalyptus pilularis | Blackbutt | Myrtaceae |
| Eucalyptus pulverulenta | Silver-leaved Mountain Gum, baby blue | Myrtaceae |
| Eucalyptus robusta | Swamp mahogany | Myrtaceae |
| Eucalyptus rudis | Desert gum | Myrtaceae |
| Eucalyptus saligna | Sydney blue gum, saligna eucalyptus | Myrtaceae |
| Eucalyptus sideroxylon | Red ironbark | Myrtaceae |
| Eucalyptus sp. | Eucalyptus | Myrtaceae |
| Eucalyptus tereticornis | Forest red gum | Myrtaceae |
| Euchiton sphaericus | Euchiton | Asteraceae |
| Eucomis autumnalis | Autumn pineapple flower, autum pineapple lily | Asparagaceae |
| Eugenia brasiliensis | Brazilian cherry, grumichama | Myrtaceae |
| Eugenia myrtifolia | Brush cherry | Myrtaceae |
| Eugenia reinwardtiana | Nioi | Myrtaceae |
| Eugenia sp. | Eugenia | Myrtaceae |
| Eugenia uniflora | Surinam cherry, pitanga | Myrtaceae |
| Euonymus japonica | Spindle tree, golden euonymus | Celastraceae |
| Euphorbia ambovombensis | Euphorbia | Euphorbiaceae |
| Euphorbia ammak | African candelabra | Euphorbiaceae |
| Euphorbia celastroides | Akoko | Euphorbiaceae |
| Euphorbia celastroides var. amplectens | Akoko | Euphorbiaceae |
| Euphorbia celastroides var. laehiensis | Akoko | Euphorbiaceae |
| Euphorbia celastroides var. lorifolia | Akoko | Euphorbiaceae |
| Euphorbia celastroides var. stokesii | Akoko | Euphorbiaceae |
| Euphorbia cotinifolia | Red spurge | Euphorbiaceae |
| Euphorbia cyathophora | Red leaved wild poinsettia | Euphorbiaceae |
| Euphorbia degeneri | Akoko | Euphorbiaceae |
| Euphorbia fulgens | Scarlet plume | Euphorbiaceae |
| Euphorbia grandicornis x pseudocactus | Euphorbia | Euphorbiaceae |
| Euphorbia heterophylla | Green leaved wild poinsettia | Euphorbiaceae |
| Euphorbia hirta | Hairy spurge | Euphorbiaceae |
| Euphorbia hypericifolia | Graceful spurge | Euphorbiaceae |
| Euphorbia hyssopifolia | Hyssopleaf sandmat | Euphorbiaceae |
| Euphorbia kuwaleana | Akoko | Euphorbiaceae |
| Euphorbia lactea | Milk striped euphorbia, mottled candle stick tree | Euphorbiaceae |
| Euphorbia leucocephala | White-laced euphorbia, Christ child | Euphorbiaceae |
| Euphorbia maculata | Spotted spurge | Euphorbiaceae |
| Euphorbia milii | Crown of thorns, christ's thorn | Euphorbiaceae |
| Euphorbia multiformis var. multiformis | Akoko, kokomalei | Euphorbiaceae |
| Euphorbia neriifolia | Indian spurge tree, dedge euphorbia | Euphorbiaceae |
| Euphorbia olowaluana | Akoko | Euphorbiaceae |
| Euphorbia peplus | Petty spurge | Euphorbiaceae |
| Euphorbia prostrata | Prostrate spurge | Euphorbiaceae |
| Euphorbia pseudocactus | Euphorbia | Euphorbiaceae |
| Euphorbia pulcherrima | Poinsettia, christmas flower | Euphorbiaceae |
| Euphorbia punicea | Jamaican poinsettia | Euphorbiaceae |
| Euphorbia serpens | Matted sandmat | Euphorbiaceae |
| Euphorbia skottsbergii | Akoko | Euphorbiaceae |
| Euphorbia sp. | Euphorbia | Euphorbiaceae |
| Euphorbia thymifolia | Spurge | Euphorbiaceae |
| Euphorbia tirucalli | Milkbush, pencil tree | Euphorbiaceae |
| Euphorbia trigona | African milk tree | Euphorbiaceae |
| Euphorbia viguieri | Euphorbia | Euphorbiaceae |
| Euploca procumbens | Fourspike heliotrope | Heliotropiaceae |
| Eurya sandwicensis | Anini, wanini | Theaceae |
| Euryops chrysanthemoides | Golden daisy bush, resin bush, Paris daisy | Asteraceae |
| Euryops pectinatus | Yellow bush daisy, euryops | Asteraceae |
| Euryops sp. | Ueryops | Asteraceae |
| Eustachys petraea | Pinewoods fingergrass | Poaceae |
| Eustoma grandiflorum | Prairie gentian, lisianthus, Texas bluebell | Gentianaceae |
| Euterpe oleracea | Acai, assai palm | Arecaceae |
| Evolvulus glomeratus subsp. grandiflorus | Blue daze | Convolvulaceae |
| Excoecaria cochinchinensis | Chinese croton | Euphorbiaceae |
| Exocarpos gaudichaudii | Hulumoa | Santalaceae |
| Fagopyrum esculentum | Buckwheat | Polygonaceae |
| Fagraea berteroana | Pua kenikeni | Loganiaceae |
| Falcataria moluccana | Moluccan albizia | Fabaceae |
| Fallopia convolvulus | Black bindweed, wild buckwheat | Polygonaceae |
| Farfugium japonicum | Farfugium, tsuwa-buki, leopard plant | Asteraceae |
| Fatoua villosa | Mulberryweed, hairy crabweed | Moraceae |
| Fatsia japonica | Fatsia, glossy leaved paper plant | Araliaceae |
| Felicia amelloides | Blue daisy, blue Marguerite | Asteraceae |
| Ferocactus cylindraceus | Barrel cactus | Cactaceae |
| Ferocactus sp. | Ferocactus | Cactaceae |
| Festuca bromoides | Brome fescue | Poaceae |
| Festuca glauca | Blue fescue | Poaceae |
| Festuca myuros | Rat tail fescue | Poaceae |
| Festuca rubra | Red fescue | Poaceae |
| Festuca sp. | Fescue | Poaceae |
| Ficus aurea | Florida strangler fig | Moraceae |
| Ficus benghalensis | Indian banyan tree | Moraceae |
| Ficus benjamina | Weeping fig | Moraceae |
| Ficus carica | Edible fig | Moraceae |
| Ficus deltoidea | Mistletoe fig, cherry banyan | Moraceae |
| Ficus elastica | Rubber tree | Moraceae |
| Ficus lyrata | Fiddle leaf fig | Moraceae |
| Ficus maclellandii | Long leaf fig, alii ficus | Moraceae |
| Ficus macrophylla | Moreton Bay fig | Moraceae |
| Ficus microcarpa | Chinese banyan tree | Moraceae |
| Ficus platypoda | Australian rock fig | Moraceae |
| Ficus pseudopalma | Philippine fig | Moraceae |
| Ficus pumila | Creeping fig | Moraceae |
| Ficus religiosa | Bo tree | Moraceae |
| Ficus salicaria | Narrow leaf fig, willow leaf fig | Moraceae |
| Ficus sp. | Ficus | Moraceae |
| Ficus triangularis | Triangle fig | Moraceae |
| Ficus virens | White fig | Moraceae |
| Filicium decipiens | Fern tree | Sapindaceae |
| Fimbristylis cymosa | Mauu akiaki, button sedge | Cyperaceae |
| Fimbristylis dichotoma | Fimbristylis | Cyperaceae |
| Fimbristylis littoralis | Fimbry, grass-like fimbristylis, lesser fimbristylis | Cyperaceae |
| Fitchia speciosa | Rarotonga fitchia, neinei | Asteraceae |
| Flaveria trinervia | Clustered yellowtops | Asteraceae |
| Flemingia strobilifera | Wild hops | Fabaceae |
| Flindersia brayleyana | Queensland maple | Rutaceae |
| Flueggea neowawraea | Mehamehame | Phyllanthaceae |
| Flueggea virosa | Chinese waterberry | Phyllanthaceae |
| Foeniculum vulgare | Fennel | Apiaceae |
| Fortunella japonica | Marumi kumquat | Rutaceae |
| Fortunella sp. | Kumquat | Rutaceae |
| Fortunella x crassifolia | Meiwa kumquat | Rutaceae |
| Fragaria chiloensis subsp. sandwicensis | Ohelo papa | Rosaceae |
| Fragaria sp. | Strawberry | Rosaceae |
| Fragaria vesca | Wild, alpine, or European strawberry | Rosaceae |
| Fragaria x ananassa | Cultivated strawberry | Rosaceae |
| Fraxinus griffithii | Himalayan ash | Oleaceae |
| Fraxinus uhdei | Tropical ash | Oleaceae |
| Fraxinus velutina | Velvet ash | Oleaceae |
| Freesia laxa | False freesia | Iridaceae |
| Freesia sp. | Freesia | Iridaceae |
| Freesia x hybrida | Common freesia, florist's freesia | Iridaceae |
| Freycinetia arborea | Ieie | Pandanaceae |
| Freycinetia cumingiana | Climbing pandanus, dwarf pandanus | Pandanaceae |
| Fuchsia boliviana | Fuchsia | Onagraceae |
| Fuchsia magellanica | Fuchsia, earring flower | Onagraceae |
| Fuchsia microphylla | Small leaf fuchsia | Onagraceae |
| Fuchsia sp. | Fuchsia | Onagraceae |
| Fuchsia x hybrida | Fuchsia | Onagraceae |
| Fumaria officinalis | Common fumitory, earth smoke | Papaveraceae |
| Furcraea foetida | Mauritius hemp | Asparagaceae |
| Gahnia beecheyi | Uki, forest sawsedge | Cyperaceae |
| Gaillardia aristata | Common gaillardia, common blanketflower | Asteraceae |
| Gaillardia pulchella | Indian blanket | Asteraceae |
| Galinsoga parviflora | Gallant soldier | Asteraceae |
| Galinsoga quadriradiata | Hairy galinsoga, shaggy soldier | Asteraceae |
| Galium aparine | Coachweed, stickywilly | Rubiaceae |
| Galium divaricatum | Bedstraw | Rubiaceae |
| Galium sp. | Unknown bedstraw | Rubiaceae |
| Galphimia gracilis | Galphimia, spray of gold, thryallis | Malpighiaceae |
| Galtonia candicans | Summer hyacinth, berg lily | Hyacinthaceae |
| Gamochaeta pensylvanica | Pennsylvania cudweed | Asteraceae |
| Gamochaeta purpurea | Spoonleaf purple everlasting | Asteraceae |
| Gamochaeta sp. | Gamochaeta | Asteraceae |
| Garcinia dulcis | Gourka, mundu, rata | Clusiaceae |
| Garcinia madruno | Lemon drop mangosteen | Clusiaceae |
| Garcinia mangostana | Purple mangosteen | Clusiaceae |
| Garcinia spicata | Bitter garcinia | Clusiaceae |
| Garcinia xanthochymus | Yellow mangosteen, false mangosteen, gourka | Clusiaceae |
| Gardenia augusta | Gardenia, cape jasmine, trailing gardenia | Rubiaceae |
| Gardenia brighamii | Gardenia | Rubiaceae |
| Gardenia carinata | Golden gardenia | Rubiaceae |
| Gardenia jasminoides | Cape jasmine | Rubiaceae |
| Gardenia sp. | Gardenia | Rubiaceae |
| Gardenia taitensis | Tahitian gardenia, tiare | Rubiaceae |
| Gardenia tubifera | Golden gardenia | Rubiaceae |
| Gardenia volkensii | Transvaal gardenia, Bushveld gardenia | Rubiaceae |
| Gasteria glomerata | Ox tongue | Asphodelaceae |
| Gastridium ventricosum | Nit grass | Poaceae |
| Gaura lindheimeri | Whirling butterflies, white gaura | Onagraceae |
| Gaussia maya | Gaussia | Arecaceae |
| Gaussia sp. | Gaussia | Arecaceae |
| Gazania rigens var. leucolaena | Trailing gazania | Asteraceae |
| Gazania rigens var. rigens | Pied gazania, treasure flower | Asteraceae |
| Gelsemium sempervirens | Carolina jessamine, yellow jessamine | Loganiaceae |
| Genista monspessulana | French broom | Fabaceae |
| Geogenanthus sp. | Geogenanthus | Commelinaceae |
| Geranium arboreum | Nohoanu | Geraniaceae |
| Geranium cuneatum subsp. cuneatum | Nohoanu | Geraniaceae |
| Geranium cuneatum subsp. tridens | Nohoanu | Geraniaceae |
| Geranium dissectum | Cranesbill | Geraniaceae |
| Geranium homeanum | Cranesbill | Geraniaceae |
| Geranium multiflorum | Nohoanu | Geraniaceae |
| Geranium retrorsum | Cransebill | Geraniaceae |
| Geranium sp. | Cransebill | Geraniaceae |
| Gigantochloa atroviolacea | Tropical black bamboo, Java black | Poaceae |
| Gigantochloa atter | Bamboo | Poaceae |
| Gigantochloa sp. | Malay dwarf bamboo | Poaceae |
| Gilia capitata | Blue thimble flower | Polemoniaceae |
| Ginkgo biloba | Ginkgo, maidenhair tree | Ginkgoaceae |
| Gladiolus dalenii | Gladiolus | Iridaceae |
| Gladiolus sp. | Gladiolus | Iridaceae |
| Gliricidia sepium | Gliricidia, madre de cacao | Fabaceae |
| Globba schomburgkii | Dancing girl ginger | Zingiberaceae |
| Globba winitii | Dacing ladies ginger, ruby queen | Zingiberaceae |
| Gloriosa superba | Climbing lily, glory lily, flame lily | Liliaceae |
| Gloxinia sp. | Hardy gloxinia | Gesneriaceae |
| Glycine max | Soybean, soya bean, edamame | Fabaceae |
| Gmelina arborea | Gumhar, bulang, Indian bulang | Verbenaceae |
| Gmelina philippensis | Parrot's beak | Verbenaceae |
| Gnetum gnemon | Melinjo, belinjo, bago | Gnetaceae |
| Gomphrena celosioides | Cockscomb gomphrena | Amaranthaceae |
| Gomphrena globosa | Globe amaranth, bozu, lehua moa loa, lehua pepa | Amaranthaceae |
| Gossypium barbadense | Sea island cotton, creole cotton, pulupulu haole | Malvaceae |
| Gossypium hirsutum | Upland cotton | Malvaceae |
| Gossypium sp. | Cotton | Malvaceae |
| Gossypium tomentosum | Mao, Hawaiian cotton | Malvaceae |
| Gouania hillebrandii | Gouania | Rhamnaceae |
| Grammatophyllum speciosum | Giant orchid, tiger orchid, sugar cane orchid, Queen of orchids | Orchidaceae |
| Grammitis hookeri | Makue lau lii | Polypodiaceae |
| Graptopetalum paraguayense | Mother of pearl, ghost plant | Crassulaceae |
| Graptopetalum sp. | Graptopetalum | Crassulaceae |
| Graptophyllum pictum | Caricature plant | Acanthaceae |
| Graptoveria sp. | Graptoveria | Crassulaceae |
| Grevillea banksii | Red silky oak | Proteaceae |
| Grevillea banksii x bipinnatifida | Grevillea 'Robyn Gordon' | Proteaceae |
| Grevillea juniperina | Protea | Proteaceae |
| Grevillea lanigera | Wooly grevillea, spider flower | Proteaceae |
| Grevillea longifolia x caleyi | Grevillea 'Ivanhoe' | Proteaceae |
| Grevillea robusta | Silky oak, silver oak, silkoak | Proteaceae |
| Grevillea rosmarinifolia | Grevillea | Proteaceae |
| Grevillea sp. | Grevillea | Proteaceae |
| Grevillea wilsonii | Grevillea | Proteaceae |
| Grewia occidentalis | Four corners | Malvaceae |
| Guadua angustifolia | Columbian thorny bamboo | Poaceae |
| Guaiacum officinale | Lignum vitae | Zygophyllaceae |
| Guara lindheimeri | White guara, whirling butterflies, apple blossom grass | Onagraceae |
| Gunnera petaloidea | Apeape | Gunneraceae |
| Gutierrezia sarothrae | Broom snakeweed | Asteraceae |
| Guzmania lingulata | Scarlet star, orange star | Bromeliaceae |
| Guzmania monostachia | West Indian tufted airplant | Bromeliaceae |
| Guzmania sp. | Guzmani bormeliad | Bromeliaceae |
| Guzmania wittmackii | Guzmanea | Bromeliaceae |
| Gymnocalycium sp. | Gymnocalycium | Cactaceae |
| Gynura aurantiaca | Purple velvet plant | Asteraceae |
| Gynura bicolor | Okinawan spinach, cholesterol spinach, longevity plant | Asteraceae |
| Habranthus robustus | Rain lily, zephyr lily, fairy lily | Liliaceae |
| Hakea salicifolia | Willow leaved hakea | Proteaceae |
| Hamelia patens | Scarlet bush, firebush | Rubiaceae |
| Handroanthus heptaphyllus | Pink trumpet tree | Bignoniaceae |
| Harpullia pendula | Australian tulipwood | Sapindaceae |
| Hatiora salicornioides | Drunkard's dream, spice cactus | Cactaceae |
| Haworthia attenuata | Haworthia | Asphodelaceae |
| Haworthia sp. | Haworthia | Asphodelaceae |
| Hebe sp. | Evergreen veronica | Plantaginaceae |
| Hedera algeriensis | Algerian ivy | Araliaceae |
| Hedera helix | English ivy | Araliaceae |
| Hedychium coccineum | Red ginger lily, orange bottlebrush ginger | Zingiberaceae |
| Hedychium coronarium | White ginger | Zingiberaceae |
| Hedychium flavescens | Yellow ginger | Zingiberaceae |
| Hedychium gardnerianum | Kahili ginger | Zingiberaceae |
| Hedychium sp. | Ginger | Zingiberaceae |
| Hedychium x elizabeth | Elizabeth ginger | Zingiberaceae |
| Hedychium x wilkeanum | White x kahili hybrid ginger | Zingiberaceae |
| Helianthus annuus | Sunflower | Asteraceae |
| Helichrysum petiolare | Licorice plant, immortelle | Asteraceae |
| Helichrysum sp. | Helichrysum | Asteraceae |
| Helichrysum thianschanicum | Silver spike, icicle | Asteraceae |
| Heliconia bihai | Lobster claw | Heliconiaceae |
| Heliconia caribaea | Lobster claw | Heliconiaceae |
| Heliconia caribaea x bihai | Heliconia hybrid cv. Jacquinii, giant claw heliconia, lobster claw | Heliconiaceae |
| Heliconia collinsiana | Red hanging heliconia | Heliconiaceae |
| Heliconia humilis | Lobster claw | Heliconiaceae |
| Heliconia indica | Striped blood banana, pink striped heliconia | Heliconiaceae |
| Heliconia latispatha | Golden lobster claw | Heliconiaceae |
| Heliconia lingulata | Heliconia | Heliconiaceae |
| Heliconia longissima | Heliconia | Heliconiaceae |
| Heliconia orthotricha | Pink eden | Heliconiaceae |
| Heliconia psittacorum | Parakeet heliconia, rhizomatosa heliconia | Heliconiaceae |
| Heliconia psittacorum x spathocircinata | Heliconia | Heliconiaceae |
| Heliconia richardiana | Little Richard | Heliconiaceae |
| Heliconia rostrata | Parrot's beak heliconia | Heliconiaceae |
| Heliconia sp. | Heliconia | Heliconiaceae |
| Heliconia stricta | Firebird heliconia, dwarf Jamaican heliconia | Heliconiaceae |
| Heliotropium amplexicaule | Heliotrope | Heliotropiaceae |
| Heliotropium anomalum var. argenteum | Hinahina, hinahina ku kahakai, nohonohopuuone, pohinahina | Heliotropiaceae |
| Heliotropium arborescens | Heliotrope | Heliotropiaceae |
| Heliotropium curassavicum | Nena, seaside heliotrope, kipukai, lau poopoohina | Heliotropiaceae |
| Heliotropium procumbens | Fourspike heliotrope | Heliotropiaceae |
| Hemarthria altissima | Limpo grass, swamp couch, red swamp grass | Poaceae |
| Hemerocallis flava | Lemon lily, yellow daylily, custard lily | Hemerocallidaceae |
| Hemerocallis sp. | Daylily | Liliaceae |
| Hemigraphis alternata | Red flame ivy, metal-leaf, red-flame | Acanthaceae |
| Hemigraphis repanda | Narrow leaf hemigraphis | Acanthaceae |
| Hemigraphis reptans | Red flame | Acanthaceae |
| Hemigraphis sp. | Hemigraphis | Acanthaceae |
| Heritiera littoralis | Looking glass tree | Malvaceae |
| Hernandia moerenhoutiana | Mountain lantern tree | Hernandiaceae |
| Hernandia nymphaeifolia | Jack in the box tree, bing a bing | Hernandiaceae |
| Hesperocnide sandwicensis | Hesperocnide | Urticaceae |
| Heterocentron subtriplinervium | Pearl flower | Melastomataceae |
| Heteromeles arbutifolia | Heteromeles | Rosaceae |
| Heteropogon contortus | Pili, pili grass | Poaceae |
| Heterotheca grandiflora | Telegraph weed | Asteraceae |
| Hibiscadelphus hualalaiensis | Hibiscadelphus | Malvaceae |
| Hibiscadelphus sp. | Hibiscadelphus | Malvaceae |
| Hibiscadelphus stellatus | Hibiscadelphus | Malvaceae |
| Hibiscus acetosella | Cranberry hibiscus, false roselle | Malvaceae |
| Hibiscus arnottianus subsp. arnottianus | Kokio keokeo, hau hele, kokio kea | Malvaceae |
| Hibiscus arnottianus subsp. immaculatus | Kokio keokeo, hau hele, kokio kea | Malvaceae |
| Hibiscus boryanus | Mandrinette, Mascarene Islands hibiscus | Malvaceae |
| Hibiscus brackenridgei | Mao hau hele | Malvaceae |
| Hibiscus brackenridgei subsp. brackenridgei | Mao hau hele | Malvaceae |
| Hibiscus campylosiphon var. glabrescens | Lanutan | Malvaceae |
| Hibiscus clayi | Hawaiian red hibiscus, hibiscus | Malvaceae |
| Hibiscus coccineus | Scarlet hibiscus | Malvaceae |
| Hibiscus elatus | Cuba bast, mahoe | Malvaceae |
| Hibiscus furcellatus | Hawaiian pink hibiscus, akiohala, akiahala, hau hele, hau hele wai | Malvaceae |
| Hibiscus kokio subsp. kokio | Hawaiian red hibiscus, kokio, kokio ula, kokio ulaula, maku | Malvaceae |
| Hibiscus kokio subsp. saintjohnianus | Hawaiian orange hibiscus, kokio, kokio ula, kokio ulaula, maku | Malvaceae |
| Hibiscus makinoi | Okinawan hibiscus | Malvaceae |
| Hibiscus moscheutos | Musk mallow, swamp rose mallow | Malvaceae |
| Hibiscus mutabilis | Cotton rose, Confederate rose, changeable rose mallow | Malvaceae |
| Hibiscus ovalifolius | Rock's hibiscus | Malvaceae |
| Hibiscus rosa-sinensis | Hibiscus | Malvaceae |
| Hibiscus sabdariffa | Roselle | Malvaceae |
| Hibiscus schizopetalus | Fringed rosemallow, pagoda flower | Malvaceae |
| Hibiscus sp. | Hibiscus | Malvaceae |
| Hibiscus tiliaceus | Hau | Malvaceae |
| Hibiscus trionum | Flower of an hour, Venice mallo | Malvaceae |
| Hibiscus waimeae | Hawaiian white hibiscus, kokio kea, kokio keokeo | Malvaceae |
| Hibiscus waimeae subsp. hannerae | Miniature Hawaiian white hibiscus, kokio keokeo | Malvaceae |
| Hildegardia barteri | Hildegardia | Malvaceae |
| Hillebrandia sandwicensis | Pua maka nui, akaakaawa | Begoniaceae |
| Hippeastrum sp. | Amaryllis lily | Amaryllidaceae |
| Hippeastrum striatum | Barbados lily, orange lily, amaryllis | Amaryllidaceae |
| Hippobroma longiflora | Star of Bethlehem | Campanulaceae |
| Hiptage benghalensis | Hiptage | Malpighiaceae |
| Holcus lanatus | Yorkshire fog | Poaceae |
| Holmskioldia sanguinea | Chinese hat plant, cup and saucer plant, parasol flower | Verbenaceae |
| Homalanthus populifolius | Bleeding-heart, Queensland poplar | Euphorbiaceae |
| Homalocladium platycladum | Tapeworm plant, ribbon bush, centipede plant | Polygonaceae |
| Homalomena sp. | Homalomena | Araceae |
| Hordeum vulgare | Barley | Poaceae |
| Horsfieldia costulata | Horsfieldia | Myristicaceae |
| Hosta sp. | Hosta | Liliaceae |
| Howea belmoreana | Curly palm, Kentia palm, Belmore sentry palm | Arecaceae |
| Howea forsteriana | Kentia palm, sentry palm, thatch palm | Arecaceae |
| Hoya australis | Wax flower | Apocynaceae |
| Hoya multiflora | Shooting star | Apocynaceae |
| Hoya sp. | Hoya, wax plant | Apocynaceae |
| Huernia sp. | Huernia | Asclepiadaceae |
| Hunnemannia fumariifolia | Mexican tulip poppy | Papaveraceae |
| Huperzia erosa | Huperzia | Lycopodiaceae |
| Huperzia phyllantha | Huperzia | Lycopodiaceae |
| Huperzia sp. | Huperzia | Lycopodiaceae |
| Hydrangea macrophylla subsp. macrophylla | Hydrangea | Hydrangeaceae |
| Hydrangea paniculata | Peegee hydrangea, panicle hydrangea, limelight | Hydrangeaceae |
| Hydrocotyle bowlesioides | Marsh pennywort | Araliaceae |
| Hydrocotyle sibthorpioides | Lawn marsh pennywort | Araliaceae |
| Hydrocotyle verticillata | Marsh pennywort, pohe, laukahi, pohepohe | Araliaceae |
| Hylocereus undatus | Night-blooming cereus, paniniokapunahoa, papipi pua, dragon fruit, red pitaya | Cactaceae |
| Hymenaea courbaril | Jatoba, West Indian locust tree, stinky toe tree | Fabaceae |
| Hymenocallis festalis | Peruvian daffodil | Liliaceae |
| Hymenocallis littoralis | Beach spider lily | Amaryllidaceae |
| Hymenocallis sp. | Spider lily | Liliaceae |
| Hymenophyllum lanceolatum | Palai hinahina | Hymenophyllaceae |
| Hymenophyllum recurvum | Ohia ku | Hymenophyllaceae |
| Hyophorbe indica | Palmiste poison, palmier batard | Arecaceae |
| Hyophorbe lagenicaulis | Bottle palm | Arecaceae |
| Hyophorbe sp. | Palm | Arecaceae |
| Hyophorbe verschaffeltii | Spindle palm | Arecaceae |
| Hyparrhenia dregeana | Silky thatching grass | Poaceae |
| Hyparrhenia rufa | Thatching grass | Poaceae |
| Hyparrhenia sp. | Thatching grass | Poaceae |
| Hypericum canariense | Canary Island's St. John's wort | Hypericaceae |
| Hypericum mutilum | St. John's wort | Hypericaceae |
| Hypericum perforatum | St. John's wort | Hypericaceae |
| Hyphaene sp. | Hyphaene | Arecaceae |
| Hypochoeris radicata | Hairy cat's ear, gosmore | Asteraceae |
| Hypoestes phyllostachya | Polka dot plant, freckle face | Acanthaceae |
| Hypolepis hawaiiensis | Olua | Dennstaedtiaceae |
| Hyptis pectinata | Comb hyptis | Lamiaceae |
| Hyptis verticillata | John Charles weed | Lamiaceae |
| Iberis umbellata | Globe candytuft | Brassicaceae |
| Ilex anomala | Kawau, aiea, Hawaiian holly | Aquifoliaceae |
| Ilex aquifolium | English or European holly | Aquifoliaceae |
| Ilex cassine | Dahoon | Aquifoliaceae |
| Ilex sp. | Holly | Aquifoliaceae |
| Ilex vomitoria | Yaupon | Aquifoliaceae |
| Impatiens hawkeri | New Guinea impatiens | Balsaminaceae |
| Impatiens sodenii | Poor man's rhododendron | Balsaminaceae |
| Impatiens sp. | Impatiens | Balsaminaceae |
| Impatiens walleriana | Impatiens, busy Lizzy, patient Lucy | Balsaminaceae |
| Indigofera spicata | Creeping indigo | Fabaceae |
| Indigofera suffruticosa | Upright indigo | Fabaceae |
| Inga feuillei | Ice cream bean | Fabaceae |
| Iochroma cyanea | Iochroma | Solanaceae |
| Ipomoea alba | Moon flower | Convolvulaceae |
| Ipomoea aquatica | Water morning glory, water spinach, ong choy, kangkong | Convolvulaceae |
| Ipomoea batatas | Sweet potato | Convolvulaceae |
| Ipomoea cairica | Ivy-leaved morning glory, koali ai | Convolvulaceae |
| Ipomoea carnea subsp. fistulosa | Bush morning glory | Convolvulaceae |
| Ipomoea horsfalliae | Horsfall's morning glory | Convolvulaceae |
| Ipomoea imperati | Hunakai, beach morning glory | Convolvulaceae |
| Ipomoea indica | Koali awa | Convolvulaceae |
| Ipomoea obscura | Obscure morning glory | Convolvulaceae |
| Ipomoea ochracea | Yellow morning glory | Convolvulaceae |
| Ipomoea pes-caprae subsp. brasiliensis | Pohuehue, beach morning glory | Convolvulaceae |
| Ipomoea sp. | Unknown morning glory | Convolvulaceae |
| Ipomoea triloba | Little bell | Convolvulaceae |
| Ipomoea tuboides | Hawaiian moon flower | Convolvulaceae |
| Ipomoea violacea | Beach moonflower | Convolvulaceae |
| Iresine herbstii | Beefsteak plant, bloodleaf, chicken gizzard | Amaranthaceae |
| Iris sp. | Iris, flag, fleur de li | Iridaceae |
| Iris x hollandica | Dutch iris | Iridaceae |
| Isachne distichophylla | Ohe | Poaceae |
| Ischaemum byrone | Ischaemum | Poaceae |
| Isopogon formosus | Rose cone flower | Proteaceae |
| Isotoma fluviatilis | Blue star creeper, swamp isotoma | Campanulaceae |
| Ixora casei | Ixora | Rubiaceae |
| Ixora finlaysonia | Siamese white ixora | Rubiaceae |
| Ixora macrothyrsa | Ixora | Rubiaceae |
| Ixora odorata | Fragrant ixora | Rubiaceae |
| Ixora sp. | Ixora | Rubiaceae |
| Ixora spectabilis | Ixora | Rubiaceae |
| Jacaranda mimosifolia | Jacaranda | Bignoniaceae |
| Jacquemontia pentantha | Jacquemontia | Convolvulaceae |
| Jacquemontia sandwicensis | Pau o Hiiaka | Convolvulaceae |
| Jasminum fluminense | Jasmine | Oleaceae |
| Jasminum grandiflorum | Spanish jasmine | Oleaceae |
| Jasminum laurifolium | Confederate jasmine, angel wing jasmine | Oleaceae |
| Jasminum mesnyi | Primrose jasmine, Chinese / Japanese jasmine | Oleaceae |
| Jasminum multiflorum | Downy jasmine | Oleaceae |
| Jasminum multipartitum | Starry jasmine | Oleaceae |
| Jasminum nitidum | Shining jasmine | Oleaceae |
| Jasminum polyanthum | Pink jasmine, winter jasmine, climbing jasmine | Oleaceae |
| Jasminum sambac | Arabian jasmine, pikake, rose pikake | Oleaceae |
| Jasminum simplicifolium | Wax jasmine | Oleaceae |
| Jasminum sp. | Jasmine | Oleaceae |
| Jatropha curcas | Physic nut, Barbados nut | Euphorbiaceae |
| Jatropha gossypifolia | Bellyache bush, cotton leaved jatropha | Euphorbiaceae |
| Jatropha integerrima | Peregrina | Euphorbiaceae |
| Jatropha multifida | Coral plant | Euphorbiaceae |
| Jatropha podagrica | Buddha belly plant, gout plant | Euphorbiaceae |
| Juglans regia | Walnut | Juglandaceae |
| Juglans sp. | Walnut | Juglandaceae |
| Juncus acuminatus | Tapertip rush | Juncaceae |
| Juncus bufonius | Toad rush | Juncaceae |
| Juncus effusus | Soft rush, common rush | Juncaceae |
| Juncus planifolius | Broadleaf rush | Juncaceae |
| Juncus polyanthemos | Manyflower rush | Juncaceae |
| Juncus sp. | Unknown juncus | Juncaceae |
| Juncus tenuis | Path rush | Juncaceae |
| Juniperus bermudiana | Bermuda juniper | Cupressaceae |
| Juniperus chinensis | Chinese juniper | Cupressaceae |
| Juniperus horizontalis | Creeping juniper | Cupressaceae |
| Juniperus procumbens | Japanese shore juniper, blue Pacific juniper | Cupressaceae |
| Juniperus sabina | Arcacia juniper | Cupressaceae |
| Juniperus sp. | Juniper | Cupressaceae |
| Juniperus virginiana | Skyrocket juniper, Eastern red cedar | Cupressaceae |
| Justicia aurea | Justicia | Acanthaceae |
| Justicia betonica | White shrimp plant, squirrel's tail | Acanthaceae |
| Justicia brandegeana | Red shrimp plant | Acanthaceae |
| Justicia carnea | Plume flower | Acanthaceae |
| Justicia ecbolia | Blue justicia | Acanthaceae |
| Justicia gendarussa | Willow-leaved justicia | Acanthaceae |
| Justicia spicigera | Justicia, firecracker plant, Mexican honeysuckle, orange plume flower | Acanthaceae |
| Kadua acuminata | Au, pilo | Rubiaceae |
| Kadua affinis | Manono | Rubiaceae |
| Kadua axillaris | Manono | Rubiaceae |
| Kadua centranthoides | Manono | Rubiaceae |
| Kadua cordata | Manono | Rubiaceae |
| Kadua coriacea | Kioele | Rubiaceae |
| Kadua laxiflora | Manono | Rubiaceae |
| Kadua littoralis | Manono | Rubiaceae |
| Kadua sp. | Kadua | Rubiaceae |
| Kaempferia marginata | Peacock ginger | Zingiberaceae |
| Kaempferia ovalifolia | Peacock plant | Zingiberaceae |
| Kalanchoe beharensis | Velvet leaf, felt bush, Napoleon's hat | Crassulaceae |
| Kalanchoe blossfeldiana | Flaming Katy, kalanchoe | Crassulaceae |
| Kalanchoe crenata | Never die | Crassulaceae |
| Kalanchoe daigremontiana | Mother of millions, devil's backbone | Crassulaceae |
| Kalanchoe fedtschenkoi | Lavender scallops | Crassulaceae |
| Kalanchoe grandiflora | Spotted kalanchoe, penwiper plant | Crassulaceae |
| Kalanchoe marmorata | Spotted kalanchoe, penwiper plant | Crassulaceae |
| Kalanchoe orgyalis | Copper spoons | Crassulaceae |
| Kalanchoe pinnata | Air plant | Crassulaceae |
| Kalanchoe rotundifolia | Common kalanchoe | Crassulaceae |
| Kalanchoe sp. | Kalanchoe | Crassulaceae |
| Kalanchoe thyrsiflora | Flap jack, dog tongue plant | Crassulaceae |
| Kalanchoe tigrina | Kalanchoe | Crassulaceae |
| Kalanchoe tomentosa | Panda plant, plush plant, pussy ears | Crassulaceae |
| Kalanchoe tubiflora | Chandelier plant | Crassulaceae |
| Kalimeris indica subsp. indica | Indian aster | Asteraceae |
| Kanaloa kahoolawensis | Ka palupalu o Kanaloa, kohe malama malama o Kanaloa | Fabaceae |
| Karomia tettensis | Northern Chinese-hat | Verbenaceae |
| Kennedia rubicunda | Dusky coral pea | Fabaceae |
| Kerriodoxa elegans | White elephant palm, King Thai palm | Arecaceae |
| Khaya senegalensis | African mahogony | Meliaceae |
| Kigelia africana | Sausage tree, potato tree | Bignoniaceae |
| Kniphofia sp. | Red hot poker | Asphodelaceae |
| Kniphofia uvaria | Red hot poker, torch lily | Asphodelaceae |
| Koelreuteria elegans subsp. formosana | Golden-rain tree | Sapindaceae |
| Kokia cookei | Kokia | Malvaceae |
| Kokia drynarioides | Kokia | Malvaceae |
| Korthalsella complanata | Hulumoa | Santalaceae |
| Korthalsella cylindrica | Hulumoa, kaumahana | Santalaceae |
| Korthalsella platycaula | Hulumoa | Santalaceae |
| Korthalsella sp. | Hulumoa | Santalaceae |
| Kunzea baxteri | Scarlet kunzea | Myrtaceae |
| Kunzea sp. | White teatree | Myrtaceae |
| Kyllinga brevifolia | Green kyllinga | Cyperaceae |
| Kyllinga nemoralis | White kyllinga | Cyperaceae |
| Lablab purpureus | Hyacinth-bean | Fabaceae |
| Lablab sp. | Lablab | Fabaceae |
| Labordia hedyosmifolia | Labordia | Loganiaceae |
| Labordia sp. | Labordia | Loganiaceae |
| Labordia tinifolia var. tinifolia | Labordia | Loganiaceae |
| Labordia triflora | Labordia, kamakahala | Loganiaceae |
| Laccospadix australasica | Atherton palm | Arecaceae |
| Lachnagrostis filiformis | Heupueo | Poaceae |
| Lactuca sativa | Lettuce, prickly lettuce | Asteraceae |
| Laelia anceps | Laelia | Orchidaceae |
| Laelia purpurata | Orchid | Orchidaceae |
| Lagenaria siceraria | Bottle gourd, white flowered gourd, long squash | Cucurbitaceae |
| Lagerstroemia archeriana | Queensland crepe myrtle | Lythraceae |
| Lagerstroemia indica | Crape myrtle | Lythraceae |
| Lagerstroemia sp. | Crape myrtle | Lythraceae |
| Lagerstroemia speciosa | Giant crape myrtle, queens crape myrtle | Lythraceae |
| Laguncularia racemosa | White mangrove | Combretaceae |
| Laleliocattleya sp. | Laelia and Cattleya hybrid orchid | Orchidaceae |
| Lamium amplexicaule | Henbit | Lamiaceae |
| Lampranthus roseus | Mini ice plant | Aizoaceae |
| Lampranthus sp. | Ice plant | Aizoaceae |
| Lansium domesticum | Langsat, duku | Meliaceae |
| Lantana camara | Lantana | Verbenaceae |
| Lantana depressa | Gold lantana, pineland lantana, rockland shrub verbena | Verbenaceae |
| Lantana montevidensis | Trailing lantana | Verbenaceae |
| Lappula occidentalis var. occidentalis | Western stickseed | Boraginaceae |
| Lapsana communis | Nipplewort | Asteraceae |
| Latania loddigesii | Blue latan palm | Arecaceae |
| Latania sp. | Latan palm | Arecaceae |
| Latania verschaffeltii | Yellow latan palm | Arecaceae |
| Lathyrus latifolius | Perrenial or everlasting pea | Fabaceae |
| Lathyrus odoratus | Sweet pea | Fabaceae |
| Laurus nobilis | Bay leaf tree, bay laurel | Lauraceae |
| Lavandula angustifolia | Lavender | Lamiaceae |
| Lavandula dentata | French lavender | Lamiaceae |
| Lavandula multifida | Fern leaf lavender | Lamiaceae |
| Lavandula pinnata | Fern leaf lavender, jagged lavender | Lamiaceae |
| Lavandula sp. | Lavender | Lamiaceae |
| Lavandula stoechas | French lavender, Spanish lavender | Lamiaceae |
| Lavandula x intermedia | Lavandin | Lamiaceae |
| Lavatera maritima | Tree mallow | Malvaceae |
| Ledebouria socialis | Silver squill, wood hyacinth | Hyacinthaceae |
| Leea guineensis | Leea, West Indian holly | Vitaceae |
| Leea philippinensis | Leea | Vitaceae |
| Lemna sp. | Duckweed | Araceae |
| Leonotis nepetifolia | Lion's ear | Lamiaceae |
| Leonurus japonicus | Motherwort, lion's tail | Lamiaceae |
| Lepechinia hastata | Pitcher sage, pakaha | Lamiaceae |
| Lepidium africanum | Peppergrass | Brassicaceae |
| Lepidium bidentatum var. o-waihiense | Anaunau, anounou, kunana, naunau | Brassicaceae |
| Lepidium bonariense | Argentine pepperweed | Brassicaceae |
| Lepidium densiflorum | Prairie pepperweed | Brassicaceae |
| Lepidium oblongum | Veiny pepperweed | Brassicaceae |
| Lepidium sativum | Garden cress | Brassicaceae |
| Lepidium sp. | Pepperweed | Brassicaceae |
| Lepidium virginicum | Virginia pepperweed | Brassicaceae |
| Lepidozamia peroffskyana | Scaly zamia, cycad | Zamiaceae |
| Lepisanthes rubiginosa | Lepisanthes | Sapindaceae |
| Lepisorus thunbergianus | Pakahakaha | Polypodiaceae |
| Leptecophylla tameiameiae | Pukiawe, aalii mahu, kawau, pukeawe | Ericaceae |
| Leptinella gruveri | Miniature brass buttons | Asteraceae |
| Leptochloa fusca subsp. uninervia | Sprangletop | Poaceae |
| Leptospermum laevigatum | Australian tea tree | Myrtaceae |
| Leptospermum morrisonii | Tea tree | Myrtaceae |
| Leptospermum petersonii | Australian tea tree | Myrtaceae |
| Leptospermum polygalifolium | Tea tree | Myrtaceae |
| Leptospermum rotundifolium | Round-leaved tea tree | Myrtaceae |
| Leptospermum scoparium | New Zealand tea tree | Myrtaceae |
| Leptospermum sp. | Leptospermum | Myrtaceae |
| Lepturus repens | Lepturus | Poaceae |
| Leucadendron argenteum | Silver tree protea | Proteaceae |
| Leucadendron discolor | Pom pom flame tips, conebush | Proteaceae |
| Leucadendron salignum | Common sunshine conebush, red conebush | Proteaceae |
| Leucadendron sp. | Protea | Proteaceae |
| Leucaena diversifolia | Upland haole koa | Fabaceae |
| Leucaena leucocephala | Haole koa, lead tree | Fabaceae |
| Leucaena leucocephala x diversifolia | Haole koa hybrid KX3 | Fabaceae |
| Leucaena leucocephala x esculenta | Haole koa hybrid K1000 | Fabaceae |
| Leucaena sp. | Haole koa, lead tree | Fabaceae |
| Leucaena x spontanea | Hybrid haole koa | Fabaceae |
| Leucanthemum maximum | Shasta daisy | Asteraceae |
| Leucanthemum vulgare | Ox-eye daisy, field daisy, white daisy, pua Pake | Asteraceae |
| Leucanthemum x superbum | Shasta daisy | Asteraceae |
| Leucojum vernum | Spring snowflake | Amaryllidaceae |
| Leucophyllum frutescens | Texas ranger | Scrophulariaceae |
| Leucospermum catherinae | Catherine-wheel pincushion | Proteaceae |
| Leucospermum conocarpodendron | Tree pincushion | Proteaceae |
| Leucospermum cordifolium | Pincushion protea | Proteaceae |
| Leucospermum mundii | Langerberg pincushion | Proteaceae |
| Leucospermum oleifolium | Overberg pincushion | Proteaceae |
| Leucospermum reflexum | Rocket pincushion | Proteaceae |
| Leucospermum reflexum var. luteum | Yellow rocket pincushion | Proteaceae |
| Leucospermum sp. | Pincushion | Proteaceae |
| Licuala grandis | Licuala | Arecaceae |
| Licuala sp. | Licuala palm | Arecaceae |
| Licuala spinosa | Mangrove fan palm, spiny licuala | Arecaceae |
| Ligustrum japonicum | Wax leaf privet | Oleaceae |
| Ligustrum japonicum var. rotundifolium | Wax leaf privet | Oleaceae |
| Ligustrum lucidum | Tree privet | Oleaceae |
| Ligustrum ovalifolium | California privet | Oleaceae |
| Ligustrum sinense | Chinese privet | Oleaceae |
| Ligustrum sp. | Privet | Oleaceae |
| Lilium sp. | Easter lily | Liliaceae |
| Limonium arborescens | Tree limonium | Plumbaginaceae |
| Limonium sp. | Statice | Plumbaginaceae |
| Linaria canadensis var. texana | Blue toad flax | Plantaginaceae |
| Linaria dalmatica | Broadleaf toadflax | Plantaginaceae |
| Linaria purpurea | Purple toadflax | Plantaginaceae |
| Lindernia crustacea | Lindernia | Linderniaceae |
| Linum bienne | Pale flax | Linaceae |
| Linum grandiflorum | Flowering flax | Linaceae |
| Linum sp. | Flax | Linaceae |
| Liparis hawaiensis | Awapuhiakanaloa | Orchidaceae |
| Lipochaeta heterophylla | Nehe | Asteraceae |
| Lipochaeta lobata | Nehe | Asteraceae |
| Lipochaeta rockii | Nehe | Asteraceae |
| Lipochaeta sp. | Nehe | Asteraceae |
| Lipochaeta succulenta | Nehe | Asteraceae |
| Lippia micromera | Stick oregano | Verbenaceae |
| Liquidambar formosana | Formosa sweetgum | Hamamelidaceae |
| Liquidambar styraciflua | Red gum, sweet gum | Hamamelidaceae |
| Liriodendron tulipifera | Tulip tree, tulip poplar, yellow poplar | Magnoliaceae |
| Liriope muscari | Lilyturf | Liliaceae |
| Liriope sp. | Lilyturf | Liliaceae |
| Liriope spicata | Creeping lilyturf | Liliaceae |
| Litchi chinensis | Litchi, lychee | Sapindaceae |
| Livistona chinensis | Chinese fan palm | Arecaceae |
| Livistona rotundifolia | Foot stool palm, anahaw palm | Arecaceae |
| Lobelia boninensis | Bonin lobelia | Campanulaceae |
| Lobelia erinus | Edging lobelia | Campanulaceae |
| Lobelia gloria-montis | Glory of the mountain lobelia | Campanulaceae |
| Lobelia grayana | Lobelia | Campanulaceae |
| Lobelia hypoleuca | Opelu, liua, moowahie | Campanulaceae |
| Lobelia laxiflora | Mexican cardinal flower, torch lobelia | Campanulaceae |
| Lobelia sp. | Lobelia | Campanulaceae |
| Lobularia maritima | Sweet alyssum | Brassicaceae |
| Lolium multiflorum | Italian ryegrass | Poaceae |
| Lolium perenne | Perennial ryegrass | Poaceae |
| Lolium sp. | Rye grass | Poaceae |
| Lonicera hildebrandiana | Large honeysuckle, giant Burmese honeysuckle | Caprifoliaceae |
| Lonicera japonica | Japanese honeysuckle, honekakala | Caprifoliaceae |
| Lophomyrtus sp. | Lophomyrtus | Myrtaceae |
| Lophospermum erubescens | Creeping gloxinia | Plantaginaceae |
| Lophostemon confertus | Brush box, vinegar tree | Myrtaceae |
| Loropetalum chinense | Razzle berry | Hamamelidaceae |
| Lotus subbiflorus | Hairy bird's foot trefoil | Fabaceae |
| Lotus uliginosus | Greater bird's foot trefoil | Fabaceae |
| Ludwigia octovalvis | Primrose willow | Onagraceae |
| Ludwigia palustris | Marsh purslane | Onagraceae |
| Ludwigia peruviana | Primrose willow | Onagraceae |
| Ludwigia sedoides | Mosaic plant | Onagraceae |
| Luffa acutangula | Luffa, Chinese squash, ridged gourd | Cucurbitaceae |
| Luffa aegyptiaca | Sponge gourd | Cucurbitaceae |
| Lupinus sp. | Lupine | Fabaceae |
| Luzula hawaiiensis | Wood rush | Juncaceae |
| Lycianthes rantonnei | Blue potato bush | Solanaceae |
| Lycium chinense | Goji berry | Solanaceae |
| Lycium sandwicense | Ohelo kai | Solanaceae |
| Lycopodiella cernua | Wawaeiole | Lycopodiaceae |
| Lycopodium sp. | Lycopodium | Lycopodiaceae |
| Lycopodium venustulum var. venustulum | Lycopodium | Lycopodiaceae |
| Lygodium japonicum | Japanese climbing fern | Lygodiaceae |
| Lysiloma latisiliquum | False tamarind | Fabaceae |
| Lysimachia lydgatei | Lysimachia | Primulaceae |
| Lysimachia mauritiana | Lysimachia | Primulaceae |
| Lysimachia maxima | Lysimachia | Primulaceae |
| Lysimachia nummularia | Creeping Jenny, twopenny grass | Primulaceae |
| Lysimachia procumbens | Golden globe, gold coin | Primulaceae |
| Lysimachia remyi | Lysimachia | Primulaceae |
| Lysimachia sp. | Lysimachia | Primulaceae |
| Lythrum maritimum | Lythrum, pukamole | Lythraceae |
| Macadamia integrifolia | Macadamia nut | Proteaceae |
| Macaranga mappa | Bingabing | Euphorbiaceae |
| Macaranga tanarius | Parasol leaf tree | Euphorbiaceae |
| Macfadyena unguis-cati | Cat's claw climber | Bignoniaceae |
| Machaerina angustifolia | Uki | Cyperaceae |
| Machaerina mariscoides subsp. meyenii | Uki | Cyperaceae |
| Maclellanara sp. | Brassia, Odontoglossum and Oncidium hybrid | Orchidaceae |
| Maclura pomifera | Osage orange | Moraceae |
| Macropiper puberulum | Hairy piper | Piperaceae |
| Macroptilium atropurpureum | Vining cow pea, siratro | Fabaceae |
| Macroptilium lathyroides | Cow pea | Fabaceae |
| Macrothelypteris torresiana | Mariana maiden fern | Thelypteridaceae |
| Macrozamia moorei | Cycad | Zamiaceae |
| Madia exigua | Small tarweed | Asteraceae |
| Magnolia grandiflora | Southern magnolia | Magnoliaceae |
| Magnolia x soulangeana | Saucer magnolia, Japanese magnolia | Magnoliaceae |
| Majidea zanquebarica | Mgambo, velvet pearls | Sapindaceae |
| Malpighia coccigera | Miniature holly, Singapore holly | Malpighiaceae |
| Malpighia emarginata | Acerola, Barbados cherry | Malpighiaceae |
| Malus pumila | Domestic apple | Rosaceae |
| Malus sp. | Apple | Rosaceae |
| Malva neglecta | Common mallow | Malvaceae |
| Malva parviflora | Cheese weed | Malvaceae |
| Malvastrum americanum | Indian Valley false mallow | Malvaceae |
| Malvastrum coromandelianum subsp. coromandelianum | False mallow | Malvaceae |
| Malvaviscus arboreus | Erect turk's cap, firecracker hibiscus | Malvaceae |
| Malvaviscus penduliflorus | Turk's cap | Malvaceae |
| Mammea americana | Mammee apple, mamey | Calophyllaceae |
| Mammillaria elongata | Golden stars, lady fingers | Cactaceae |
| Mammillaria sp. | Mammillaria | Cactaceae |
| Mandevilla boliviensis | Mandevilla | Apocynaceae |
| Mandevilla funiformis | Yellow mandevilla | Apocynaceae |
| Mandevilla sp. | Mandevilla | Apocynaceae |
| Mandevilla splendens | Red riding hood dipladenia | Apocynaceae |
| Mandevilla x amabilis | Mandevilla | Apocynaceae |
| Mangifera indica | Mango, manako, meneke | Anacardiaceae |
| Manihot esculenta | Cassava, tapioca | Euphorbiaceae |
| Manihot glaziovii | Ceara rubber tree | Euphorbiaceae |
| Manilkara dissecta | Pani | Sapotaceae |
| Manilkara hexandra | Palu, khimi | Sapotaceae |
| Manilkara zapota | Sapodilla, chikoo, chico, chicle | Sapotaceae |
| Mansoa hymenaea | Garlic vine | Bignoniaceae |
| Maranta sp. | Prayers plant | Marantaceae |
| Marattia douglasii | Pala, kapua ilio | Marattiaceae |
| Marsdenia floribunda | Stephanotis, Madagascar jasmine, pua male | Asclepiadaceae |
| Marsilea villosa | Ihiihi | Marsileaceae |
| Matricaria discoidea | False chamomile, disc mayweed, pineapple weed, rayless chamomile | Asteraceae |
| Maurandya antirrhiniflora | Roving sailor | Plantaginaceae |
| Maurandya barclaiana | Maurandya | Plantaginaceae |
| Medicago lupulina | Black medic | Fabaceae |
| Medicago polymorpha | Bur clover | Fabaceae |
| Medicago sativa | Alfalfa | Fabaceae |
| Medicago sp. | Unknown medicago | Fabaceae |
| Medinilla apoensis | Philippine pink | Melastomataceae |
| Medinilla cumingii | Medinilla | Melastomataceae |
| Medinilla magnifica | Medinilla | Melastomataceae |
| Medinilla scortechinii | Orange medinilla | Melastomataceae |
| Medinilla venosa | Medinilla | Melastomataceae |
| Megaskepasma erythrochlamys | Brazilian red cloak | Acanthaceae |
| Megathyrsus maximus | Guinea grass | Poaceae |
| Melaleuca armillaris | Bracelet honey myrtle | Myrtaceae |
| Melaleuca bracteata | River tea tree, snow in summer | Myrtaceae |
| Melaleuca diosmifolia | Dotted meleleuca, green honey myrtle | Myrtaceae |
| Melaleuca quinquenervia | Paperbark, punk tree | Myrtaceae |
| Melaleuca sp. | Melaleuca | Myrtaceae |
| Melaleuca styphelioides | Prickly paperbark | Myrtaceae |
| Melanthera integrifolia | Nehe | Asteraceae |
| Melanthera kamolensis | Nehe | Asteraceae |
| Melanthera lavarum | Nehe | Asteraceae |
| Melanthera tenuifolia | Nehe | Asteraceae |
| Melastoma alata var. lalique | Melastoma | Melastomataceae |
| Melastoma sanguineum | Fox-tongued melastoma | Melastomataceae |
| Melastoma septemnervium | Asian melastome | Melastomataceae |
| Melastoma sp. | Melastoma | Melastomataceae |
| Melia azedarach | Chinaberry | Meliaceae |
| Melicoccus bijugatus | Spanish lime, genip, mamoncillo | Sapindaceae |
| Melicope adscendens | Melicope | Rutaceae |
| Melicope clusiifolia | Kakaemoa | Rutaceae |
| Melicope hawaiensis | Alani | Rutaceae |
| Melicope knudsenii | Melicope | Rutaceae |
| Melicope latifolia | Melicope | Rutaceae |
| Melicope molokaiensis | Alani | Rutaceae |
| Melicope orbicularis | Alani | Rutaceae |
| Melicope ovalis | Alani | Rutaceae |
| Melicope sp. | Melicope | Rutaceae |
| Melilotus alba | White sweet clover | Fabaceae |
| Melilotus indica | Yellow sweet clover | Fabaceae |
| Melinis minutiflora | Molasses grass | Poaceae |
| Melinis repens | Natal red top | Poaceae |
| Melissa officinalis | Lemon balm | Lamiaceae |
| Melochia umbellata | Melochia | Malvaceae |
| Mentha sp. | Mint | Lamiaceae |
| Mentha spicata | Spearmint | Lamiaceae |
| Mentha suaveolens | Pineapple mint | Lamiaceae |
| Mentha x piperita | Peppermint | Lamiaceae |
| Merremia aegyptia | Hairy merremia | Convolvulaceae |
| Merremia tuberosa | Woodrose | Convolvulaceae |
| Metrosideros kermadecensis | Ohia haole, pohutukawa | Myrtaceae |
| Metrosideros polymorpha | ʻōhiʻa, ohia, lehua | Myrtaceae |
| Metrosideros polymorpha var. macrophylla | Ohia | Myrtaceae |
| Metrosideros rugosa | Ohia | Myrtaceae |
| Metrosideros sp. | Ohia | Myrtaceae |
| Metrosideros waialeale var. fauriei | Ohia | Myrtaceae |
| Metroxylon amicarum | Caroline ivory nut palm | Arecaceae |
| Michelia champaca | Fragrant Himalayan champaca | Magnoliaceae |
| Michelia figo | Banana shrub | Magnoliaceae |
| Michelia sp. | Michelia | Magnoliaceae |
| Michelia x alba | White champak, pak-lan, fragrant Himalayan champaca | Magnoliaceae |
| Miconia calvescens | Miconia | Melastomataceae |
| Microlepia strigosa | Palapalai | Dennstaedtiaceae |
| Microlepia strigosa var. mauiensis | Hairy palapalai | Dennstaedtiaceae |
| Microsorum musifolium | Crocodile fern, crocodyllus | Polypodiaceae |
| Microsorum spectrum var. spectrum | Peahi | Polypodiaceae |
| Mikania scandens | Climbing hempvine | Asteraceae |
| Millettia pinnata | Pongamia | Fabaceae |
| Miltassia sp. | Brassia and Miltonia hybrid orchid | Orchidaceae |
| Miltonia sp. | Cyrtochilum, Oncidium, Odontoglossum, and Brassia hybrid orchid | Orchidaceae |
| Miltonidium sp. | Miltonia and Oncidium hybrid orchid | Orchidaceae |
| Mimetes cucullatus | Rooi stompie, common pagoda | Proteaceae |
| Mimosa pudica | Sensitive plant, sleeping grass | Fabaceae |
| Mimusops elengi | Bullet wood | Sapotaceae |
| Mirabilis jalapa | Four-oclock | Nyctaginaceae |
| Mitracarpus hirtus | Mitracarpus | Rubiaceae |
| Modiola caroliniana | Modiola | Malvaceae |
| Molineria capitulata | Palm grass | Hypoxidaceae |
| Mollugo cerviana | Threadstem carpetweed | Molluginaceae |
| Mollugo verticillata | Green carpetweed | Molluginaceae |
| Momordica charantia | Bitter melon | Cucurbitaceae |
| Monstera deliciosa | Swiss-cheese plant | Araceae |
| Monstera friedrichsthalii | Swiss cheese plant, window leaf, split leaf philodendron | Araceae |
| Monstera obliqua | Window leaf, swiss cheese plant | Araceae |
| Montanoa hibiscifolia | Tree daisy | Asteraceae |
| Morella cerifera | Wax myrtle | Myricaceae |
| Morella faya | Firetree | Myricaceae |
| Morelotia gahniiformis | Gahnia | Cyperaceae |
| Morinda citrifolia | Noni | Rubiaceae |
| Moringa oleifera | Kalamungay, drumstick tree | Moringaceae |
| Morus alba | White mulberry | Moraceae |
| Mucuna gigantea | Sea bean | Fabaceae |
| Mucuna nigricans | Black jade vine | Fabaceae |
| Mucuna novoguineensis | Scarlet jade vine | Fabaceae |
| Mucuna sloanei | Hamburger sea bean, cow-itch plant | Fabaceae |
| Mucuna sloanei var. persericea | Sea bean, cow-itch plant | Fabaceae |
| Mucuna sloanei var. sloanei | Sea bean, cow-itch plant | Fabaceae |
| Mucuna sp. | Sea bean | Fabaceae |
| Muehlenbeckia complexa | Creeping wire vine | Polygonaceae |
| Muhlenbergia capillaris | Pink hair grass | Poaceae |
| Muntingia calabura | Jamaican cherry, strawberry tree | Elaeocarpaceae |
| Murraya koenigii | Curry tree | Rutaceae |
| Murraya paniculata | Mock orange | Rutaceae |
| Musa acuminata | Banana | Musaceae |
| Musa balbisiana | Koana, wild banana | Musaceae |
| Musa coccinea | Scarlet banana | Musaceae |
| Musa laterita | Laterita ornamental banana | Musaceae |
| Musa ornata | Flowering banana | Musaceae |
| Musa sp. | Banana | Musaceae |
| Musa textilis | Abaca, fiber banana | Musaceae |
| Musa troglodytarum | Maia hei, fei banana | Musaceae |
| Musa velutina | Pink fruited banana, self-peeling banana | Musaceae |
| Musa x paradisiaca | Banana, maia | Musaceae |
| Mussaenda erythrophylla | Ashanti blood | Rubiaceae |
| Mussaenda frondosa | Flag bush | Rubiaceae |
| Mussaenda sp. | Mussaenda | Rubiaceae |
| Myoporum sandwicense | Naio | Myoporaceae |
| Myoporum stellatum | Naio | Myoporaceae |
| Myrcianthes pungens | Guabiju | Myrtaceae |
| Myrciaria cauliflora | Jaboticaba, Brazilian grape tree | Myrtaceae |
| Myriophyllum aquaticum | Parrot feather, watermilfoil | Haloragaceae |
| Myrsine floridana | Myrsine | Myrtaceae |
| Myrsine lanaiensis | Kolea | Primulaceae |
| Myrsine lessertiana | Kolea lau nui | Primulaceae |
| Myrsine lessertiana x sandwicensis | Kolea lau nui and lau lii hybrid | Primulaceae |
| Myrsine sandwicensis | Kolea lau lii | Primulaceae |
| Myrsine sp. | Kolea | Primulaceae |
| Myrtus communis | Myrtle | Myrtaceae |
| Nadularium sp. | Nadularium | Bromeliaceae |
| Nama sandwicensis | Hinahina kahakai | Boraginaceae |
| Nandina domestica | Heavenly bamboo | Berberidaceae |
| Narcissus sp. | Narcissus, daffodil | Liliaceae |
| Narcissus tazetta | Chinese sacred lily, daffodil, bunch-flowered narcissus | Liliaceae |
| Nassella tenuissima | Mexican feather grass | Poaceae |
| Nasturtium officinale | Watercress | Brassicaceae |
| Nasturtium sp. | Nasturtium | Brassicaceae |
| Nastus elatus | Nastus bamboo | Poaceae |
| Nelumbo nucifera | Lotus | Nelumbonaceae |
| Nemanthus gregarius | Goldfish plant, guppy plant | Gesneriaceae |
| Nematanthus wettsteinii | Goldfish plant, candy corn plant | Gesneriaceae |
| Nemesia sp. | Nemesia | Scrophulariaceae |
| Neomarica caerulea | Walking iris, twelve apostles | Iridaceae |
| Neomarica gracilis | Walking iris, apostle plant | Iridaceae |
| Neomarica longifolia | Yellow walking iris | Iridaceae |
| Neomarica northiana | Walking iris | Iridaceae |
| Neomarica sp. | Walking iris, apostle plant | Iridaceae |
| Neonotonia wightii | Glycine, tinaroo | Fabaceae |
| Neoregelia carolinae | Blushing bromeliad | Bromeliaceae |
| Neoregelia sp. | Bromeliad | Bromeliaceae |
| Nepenthes sp. | Pitcher plant | Nepenthaceae |
| Nepeta cataria | Catnip | Lamiaceae |
| Nephelium lappaceum | Rambutan | Sapindaceae |
| Nephrolepis biserrata | Giant sword fern | Nephrolepidaceae |
| Nephrolepis brownii | Asian sword fern | Nephrolepidaceae |
| Nephrolepis cordifolia | Narrow sword fern, kupukupu lau lii | Nephrolepidaceae |
| Nephrolepis exaltata | Sword fern, kupukupu | Nephrolepidaceae |
| Nephrolepis exaltata subsp. hawaiiensis | Nianiau, okupukupu | Nephrolepidaceae |
| Nephrolepis falcata | Fishtail fern | Nephrolepidaceae |
| Nephrolepis sp. | Sword fern | Nephrolepidaceae |
| Neraudia sericea | Neraudia | Urticaceae |
| Nerium oleander | Oleander | Apocynaceae |
| Nertera granadensis | Makole, pilo | Rubiaceae |
| Nesoluma polynesicum | Keahi | Sapotaceae |
| Nestegis sandwicensis | Olopua | Oleaceae |
| Nicandra physalodes | Apple of Peru, shoofly | Solanaceae |
| Nicotiana alata | Jasmine tobacco | Solanaceae |
| Nicotiana glauca | Tree tobacco | Solanaceae |
| Nicotiana tabacum | Tobacco | Solanaceae |
| Nidularium sp. | Nidularium | Bromeliaceae |
| Nigella damascena | Love in a mist | Ranunculaceae |
| Norantea guianensis subsp. guianensis | Red hot poker | Marcgraviaceae |
| Noronhia emarginata | Madagascar olive | Oleaceae |
| Nothocestrum latifolium | Aiea | Solanaceae |
| Nototrichium humile | Kului | Amaranthaceae |
| Nototrichium sandwicense | Kului | Amaranthaceae |
| Nuphar luteum | Spatter-dock, cow-lily | Nymphaeaceae |
| Nymphaea nouchali | Red and blue star water lily | Nymphaeaceae |
| Nymphaea sp. | Water lily | Nymphaeaceae |
| Nymphoides aquatica | Banana lily, floating heart | Menyanthaceae |
| Nymphoides sp. | Nymphoides | Menyanthaceae |
| Ochna integerrima | Vietnamese Mickey Mouse plant | Ochnaceae |
| Ochna mossambicensis | African Mickey Mouse plant | Ochnaceae |
| Ochna serrulata | Mickey Mouse plant | Ochnaceae |
| Ochna sp. | Mickey Mouse plant | Ochnaceae |
| Ochna thomasiana | Mickey Mouse plant | Ochnaceae |
| Ochroma pyramidale | Balsa, corkwood | Bombacaceae |
| Ochrosia haleakalae | Holei | Apocynaceae |
| Ocimum americanum | Lemon basil, hoary basil | Lamiaceae |
| Ocimum basilicum | Sweet basil | Lamiaceae |
| Ocimum basilicum var. purpureum | Purple basil | Lamiaceae |
| Ocimum basilicum var. thyrsiflorum | Thai basil, ornamental basil | Lamiaceae |
| Ocimum gratissimum | Wild basil | Lamiaceae |
| Ocimum tenuiflorum | Holy basil | Lamiaceae |
| Odontobrassia sp. | Brassia and Odontoglossum hybrid orchid | Orchidaceae |
| Odontonema cuspidatum | Firespike | Acanthaceae |
| Odontosoria chinensis | Palaa | Lindsaeaceae |
| Oenothera biennis | Primrose | Onagraceae |
| Oenothera kunthiana | Primrose | Onagraceae |
| Oenothera laciniata | Cutleaved evening primrose | Onagraceae |
| Oenothera sp. | Primrose | Onagraceae |
| Oenothera speciosa | Pink evening primrose, showy evening primrose | Onagraceae |
| Oenothera stricta subsp. stricta | Evening primrose | Onagraceae |
| Oldenlandia corymbosa | Hedyotis | Rubiaceae |
| Oldenlandiopsis callitrichoides | Hedyotis | Rubiaceae |
| Olea europaea subsp. cuspidata | African olive | Oleaceae |
| Olea europaea subsp. europaea | European olive | Oleaceae |
| Oncidium sp. | Oncidium | Orchidaceae |
| Oncosperma tigillarium | Nibung palm, gendiwung | Arecaceae |
| Ophioglossum pendulum | Puapua moa, laukahi, adder's tongue | Ophioglossaceae |
| Ophioglossum polyphyllum | Pololei | Ophioglossaceae |
| Ophiopogon japonicus | Dwarf lilyturf, mondo grass | Liliaceae |
| Ophiopogon planiscapus | Black leaved mondo grass | Liliaceae |
| Oplismenus hirtellus | Basketgrass, bamboo grass | Poaceae |
| Opuntia cochenillifera | Cactus | Cactaceae |
| Opuntia ficus-indica | Panini, papipi, prickly pear cactus | Cactaceae |
| Oreobolus furcatus | Oreobolus | Cyperaceae |
| Origanum majorana | Sweet marjoram, Italian oregano | Lamiaceae |
| Origanum vulgare | Wild marjoram, Greek oregano | Lamiaceae |
| Origanum vulgare subsp. hirtum | Winter marjoram, Greek oregano | Lamiaceae |
| Origanum x majoricum | Italian oregano | Lamiaceae |
| Oroxylum indicum | Broken bone tree | Bignoniaceae |
| Orthosiphon aristatus | Cat's whiskers, Java tea | Lamiaceae |
| Oryza sp. | Rice | Poaceae |
| Osmanthus fragrans | Fragrant olive | Oleaceae |
| Osmoxylon lineare | Miagos bush | Araliaceae |
| Osteomeles anthyllidifolia | Ulei, Hawaiian rose | Rosaceae |
| Osteospermum sp. | African daisy, sunny Henry | Asteraceae |
| Otacanthus caeruleus | Brazilian snapdragon | Plantaginaceae |
| Otatea acuminata subsp. aztecorum | Mexican weeping bamboo | Poaceae |
| Oxalis corniculata | Yellow wood sorrel | Oxalidaceae |
| Oxalis debilis var. corymbosa | Pink wood sorrel | Oxalidaceae |
| Oxalis sp. | Charmed wine oxalis | Oxalidaceae |
| Oxalis spiralis | Spiral sorrel | Oxalidaceae |
| Ozothamnus diosmifolius | Rice flower, sago bush | Asteraceae |
| Pachira aquatica | Guiana chestnut, Malabar chestnut | Malvaceae |
| Pachycereus marginatus | Central Mexico organ pipe | Cactaceae |
| Pachycereus schottii | Senita cactus, whisker cactus | Cactaceae |
| Pachypodium sp. | Pacypodium | Apocynaceae |
| Pachyrhizus erosus | Jicama, Mexican yam, Mexican turnip | Fabaceae |
| Pachystachys lutea | Yellow shrimp plant | Acanthaceae |
| Pachystachys spicata | Cardinal's guard | Acanthaceae |
| Paederia foetida | Maile pilau | Rubiaceae |
| Palafoxia callosa | Palafoxia | Asteraceae |
| Pandanus amaryllis | Pandanus | Pandanaceae |
| Pandanus baptistii | Variegated dwarf Pandanus, white-striped Pandanus | Pandanaceae |
| Pandanus dubius | Screw pine, pandanus | Pandanaceae |
| Pandanus japensis | Pandanus | Pandanaceae |
| Pandanus sp. | Pandanus | Pandanaceae |
| Pandanus tectorius | Hala, screwpine | Pandanaceae |
| Pandanus utilis | Screwpine | Pandanaceae |
| Pandanus vandermeeschii | Pandanus | Pandanaceae |
| Pandorea jasminoides | Bower plant, pink jasmine | Bignoniaceae |
| Pangium edule | Payang | Flacourtiaceae |
| Panicum antidotale | Giant panic grass | Poaceae |
| Panicum bambastii | Blue panic grass | Poaceae |
| Panicum coloratum | Kleingrass | Poaceae |
| Panicum fauriei | Panicum | Poaceae |
| Panicum fauriei var. carteri | Panicum | Poaceae |
| Panicum fauriei var. fauriei | Panicum | Poaceae |
| Panicum fauriei var. latius | Panicum | Poaceae |
| Panicum hillebrandianum | Dicanthelium | Poaceae |
| Panicum konaense | Panicum | Poaceae |
| Panicum nephelophilum | Konakona | Poaceae |
| Panicum pellitum | Panicum | Poaceae |
| Panicum repens | Torpedo grass | Poaceae |
| Panicum sp. | Panicum | Poaceae |
| Panicum tenuifolium | Mountain pili | Poaceae |
| Panicum torridum | Konakona | Poaceae |
| Panicum virgatum | Switchgrass | Poaceae |
| Panicum xerophilum | Konakona | Poaceae |
| Paphiopedilum sp. | Paphiopedilum | Orchidaceae |
| Papilionanthe sp. | Miss Joaquim | Orchidaceae |
| Paraserianthes lophantha subsp. montana | Mountain Albizia | Fabaceae |
| Parentucellia viscosa | Yellow glandweed | Orobanchaceae |
| Parkia timoriana | Tree beans, yongchak, parkia | Fabaceae |
| Parkinsonia aculeata | Jerusalem thorn | Fabaceae |
| Parthenium hysterophorus | False ragweed, Santa Maria | Asteraceae |
| Paspalum atratum | Atra paspalum | Poaceae |
| Paspalum conjugatum | Hilo grass | Poaceae |
| Paspalum dilatatum | Dallis grass | Poaceae |
| Paspalum fimbriatum | Fimbriate paspalum, Panama paspalum, Columbia grass | Poaceae |
| Paspalum mandiocanum var. mandiocanum | Broad leaf paspalum | Poaceae |
| Paspalum notatum | Bahia grass | Poaceae |
| Paspalum plicatulum | Brownseed paspalum | Poaceae |
| Paspalum scrobiculatum | Ricegrass | Poaceae |
| Paspalum setaceum | Paspalum | Poaceae |
| Paspalum sp. | Paspalum | Poaceae |
| Paspalum urvillei | Vasey grass | Poaceae |
| Paspalum vaginatum | Seashore paspalum | Poaceae |
| Passiflora caerulea x amethystina | Passion flower cv Purple Haze | Passifloraceae |
| Passiflora edulis | Passion fruit | Passifloraceae |
| Passiflora foetida | Love in a mist | Passifloraceae |
| Passiflora incarnata x miniata | Lady Margaret passion flower | Passifloraceae |
| Passiflora laurifolia | Yellow water lemon, Jamaican lilikoi | Passifloraceae |
| Passiflora ligularis | Sweet granadilla | Passifloraceae |
| Passiflora miniata | Passion fruit | Passifloraceae |
| Passiflora quadrangularis | Giant granadilla | Passifloraceae |
| Passiflora sp. | Passiflora | Passifloraceae |
| Passiflora suberosa | Corkystem passionflower, huehue haole | Passifloraceae |
| Passiflora subpeltata | White passion flower | Passifloraceae |
| Passiflora tarminiana | Banana poka | Passifloraceae |
| Passiflora vitifolia | Grape-leaved passion fruit | Passifloraceae |
| Passiflora vitifolia var. bracteosa | Grape leaved passion flower | Passifloraceae |
| Passiflora x violacea | Blue passion flower | Passifloraceae |
| Paulownia tomentosa | Empress tree, princess tree | Paulowniaceae |
| Pedilanthus bracteatus | Slipper plant, candelilla | Euphorbiaceae |
| Pedilanthus tithymaloides | Slipper flower | Euphorbiaceae |
| Pelagodoxa henryana | Marquesas palm | Arecaceae |
| Pelargonium capitatum | Rose scented geranium, atom snowflake geranium | Geraniaceae |
| Pelargonium fragrans | Nutmeg geranium | Geraniaceae |
| Pelargonium graveolens | Citrosa geranium, rose geranium, citronella | Geraniaceae |
| Pelargonium sp. | Geranium | Geraniaceae |
| Pelargonium x domesticum | Regal geranium | Geraniaceae |
| Pelargonium x hortorum | Common geranium, fish geranium | Geraniaceae |
| Pellaea ternifolia | Kalamoho | Pteridaceae |
| Peltophorum pterocarpum | Yellow poinciana | Fabaceae |
| Pentalinon luteum | Wild allamanda, yellow dipladenia | Apocynaceae |
| Pentas lanceolata | Pentas | Rubiaceae |
| Peperomia blanda | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia cookiana | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia dahlstedtii | Fosteri peperomia | Piperaceae |
| Peperomia eekana | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia latifolia | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia macraeana | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia mauiensis | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia membranacea | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia obovatilimba | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia orba | Pixie peperomia, teardrop peperomia | Piperaceae |
| Peperomia rubella | Rubella peperomia | Piperaceae |
| Peperomia sp. | Peperomia | Piperaceae |
| Peperomia subpetiolata | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Peperomia tetraphylla | ʻalaʻala wai nui, alaala wai nui | Piperaceae |
| Pereskia aculeata | Barbados gooseberry, leaf cactus | Cactaceae |
| Pereskia bleo | Rose cactus | Cactaceae |
| Pereskia grandifolia var. grandifolia | Pereskia, rose cactus | Cactaceae |
| Perilla frutescens | Shiso, perilla | Lamiaceae |
| Perityle emoryi | Rock daisy | Asteraceae |
| Perrottetia sandwicensis | Olomea | Dipentodontaceae |
| Persea americana | Avocado, alligator pear | Lauraceae |
| Persicaria capitata | Heartweed, smartweed, pink-head knotweed | Polygonaceae |
| Persicaria odorata | Vietnamese coriander, Vietnamese mint | Polygonaceae |
| Persicaria punctata | Water smartweed | Polygonaceae |
| Petrea volubilis | Sandpaper vine, queen's wreath | Verbenaceae |
| Petrophile pulchella | Cone sticks | Proteaceae |
| Petrorhagia velutina | Childing pink | Caryophyllaceae |
| Petroselinum crispum | Parsley | Apiaceae |
| Petunia x hybrida | Petunia | Solanaceae |
| Peucedanum sandwicense | Makou | Apiaceae |
| Phaius tankervilleae | Chinese ground orchid, nun's cap | Orchidaceae |
| Phalaenopsis sp. | Phalaenopsis | Orchidaceae |
| Phalaenopsis stuartiana | Orchi | Orchidaceae |
| Phalaris aquatica | Bulbous canary grass | Poaceae |
| Phalaris sp. | Phalaris | Poaceae |
| Phaseolus lunatus | Butter bean, lima bean, sieva bean | Fabaceae |
| Phaseolus vulgaris | Bush bean, garden bean, pole bean | Fabaceae |
| Philadelphus karwinskianus | Philadelphus | Hydrangeaceae |
| Philadelphus x virginalis | Minnesota snow flake, virginal mock orange | Hydrangeaceae |
| Philodendron bipinnatifidum | Tree philodendron | Araceae |
| Philodendron cordatum | Heart leaf philodendron | Araceae |
| Philodendron lacerum | Philodendron | Araceae |
| Philodendron rubrum | Philodendron | Araceae |
| Philodendron sp. | Philodendron | Araceae |
| Philotheca myoporoides | Long leaf wax flower | Rutaceae |
| Phlebodium aureum | Lauae haole | Polypodiaceae |
| Phleum pratense | Phleum | Poaceae |
| Phoenicophorium borsigianum | Theif palm, latanier feuille | Arecaceae |
| Phoenix canariensis | Canary island date palm | Arecaceae |
| Phoenix dactylifera | Date palm | Arecaceae |
| Phoenix roebelenii | Dwarf date palm, pygmy date palm | Arecaceae |
| Phoenix sp. | Date palm | Arecaceae |
| Phormium tenax | New Zealand flax | Asphodelaceae |
| Photinia davidiana | Photinia | Rosaceae |
| Photinia x fraseri | Fraser's photinia, red tipped photinia | Rosaceae |
| Phragmites australis | Common reed | Poaceae |
| Phyla nodiflora | Phyla | Verbenaceae |
| Phyllanthus acidus | Otaheite gooseberry | Phyllanthaceae |
| Phyllanthus debilis | Niruri, phyllanthus | Phyllanthaceae |
| Phyllanthus distichus | Pamakani mahu, pamakani | Phyllanthaceae |
| Phyllanthus sp. | Phyllanthus | Phyllanthaceae |
| Phyllanthus tenellus | Phyllanthus | Phyllanthaceae |
| Phyllostachys nigra | Black bamboo | Poaceae |
| Phyllostegia bracteata | Phyllostegia | Lamiaceae |
| Phyllostegia brevidens | Phyllostegia | Lamiaceae |
| Phyllostegia haliakalae | Phyllostegia | Lamiaceae |
| Phyllostegia macrophylla | Phyllostegia | Lamiaceae |
| Phyllostegia pilosa | Phyllostegia | Lamiaceae |
| Phyllostegia sp. | Phyllostegia | Lamiaceae |
| Phymatosorus grossus | Lauae, maile scented fern | Polypodiaceae |
| Physalis angulata | Husk tomato | Solanaceae |
| Physalis peruviana | Poha, Cape gooseberry | Solanaceae |
| Physalis philadelphica | Tomatillo | Solanaceae |
| Phytolacca octandra | Pokeweed | Phytolaccaceae |
| Phytolacca sandwicensis | Popolo ku mai | Phytolaccaceae |
| Picea abies | Norway spruce | Pinaceae |
| Picris hieracioides | Hawkweed ox-tongue | Asteraceae |
| Pigafetta filaris | Wanga palm, white wanga palm | Arecaceae |
| Pilea microphylla | Artillery plant | Urticaceae |
| Pilea nummulariifolia | Creeping Charlie | Urticaceae |
| Pilea peploides | Nettle | Urticaceae |
| Pilosocereus pachycladus | Pilocereus | Cactaceae |
| Pilosocereus sp. | Pilosocereus | Cactaceae |
| Pimenta dioica | All spice | Myrtaceae |
| Pimenta racemosa | Bay rum tree | Myrtaceae |
| Pinanga kuhlii | Pinanga palm, ivory cane palm | Arecaceae |
| Pinus caribaea var. hondurensis | Caribean pine | Pinaceae |
| Pinus coulteri | Coulter pine | Pinaceae |
| Pinus elliottii | Slash pine | Pinaceae |
| Pinus jeffreyi | Jeffrey pine | Pinaceae |
| Pinus patula | Mexican weeping pine | Pinaceae |
| Pinus pinaster | Maritime pine, cluster pine | Pinaceae |
| Pinus ponderosa | Ponderosa pine | Pinaceae |
| Pinus radiata | Monterey pine | Pinaceae |
| Pinus sp. | Pine | Pinaceae |
| Pinus strobus | White pine | Pinaceae |
| Pinus taeda | Loblolly pine | Pinaceae |
| Pinus thunbergii | Japanese black pine | Pinaceae |
| Piper aduncum | Spiked pepper | Piperaceae |
| Piper auritum | False awa | Piperaceae |
| Piper gualiameanse | Piper | Piperaceae |
| Piper lolot | Piper | Piperaceae |
| Piper methysticum | Awa, kawa, kava | Piperaceae |
| Piper nigrum | Black pepper | Piperaceae |
| Piper postelsianum | Piper | Piperaceae |
| Piper sarmentosum | Thai piper | Piperaceae |
| Piper sp. | Piper | Piperaceae |
| Pipturus albidus | Mamaki, mamake | Urticaceae |
| Pipturus forbesii | Pipturus | Urticaceae |
| Pisonia brunoniana | Papala kepau | Nyctaginaceae |
| Pisonia grandis | Pisonia | Nyctaginaceae |
| Pisonia sandwicensis | Aulu, kaulu | Nyctaginaceae |
| Pisonia sp. | Papala kepau | Nyctaginaceae |
| Pisonia umbellifera | Papala kepau | Nyctaginaceae |
| Pistia stratiotes | Water lettuce | Araceae |
| Pisum sativum | Garden pea | Fabaceae |
| Pisum sativum var. macrocarpum | Sugar snap pea, snow pea | Fabaceae |
| Pithecellobium alexandri | Pithecellobium | Fabaceae |
| Pithecellobium dulce | Manila tamarind, opiuma | Fabaceae |
| Pittosporum confertiflorum | Hoawa | Pittosporaceae |
| Pittosporum crassifolium | Karo | Pittosporaceae |
| Pittosporum glabrum | Hoawa | Pittosporaceae |
| Pittosporum halophilum | Hoawa | Pittosporaceae |
| Pittosporum hosmeri | Hoawa | Pittosporaceae |
| Pittosporum sp. | Pittosporum | Pittosporaceae |
| Pittosporum tenuifolium | Kohuhu | Pittosporaceae |
| Pittosporum terminalioides | Hoawa | Pittosporaceae |
| Pittosporum tetraspermum | Pittosporum | Pittosporaceae |
| Pittosporum tobira | Pittosporum | Pittosporaceae |
| Pittosporum undulatum | Victorian box | Pittosporaceae |
| Pittosporum viridiflorum | Cape pittosporum | Pittosporaceae |
| Pityrogramma austroamericana | Golden fern | Pteridaceae |
| Pityrogramma calomelanos | Silver fern, Dixie silverback fern | Pteridaceae |
| Plantago lanceolata | Narrow-leaved plantain | Plantaginaceae |
| Plantago major | Broad-leaved or common plantain | Plantaginaceae |
| Plantago pachyphylla | Laukahi kuahiwi, manene | Plantaginaceae |
| Plantago princeps | Laukahi kuahiwi, ale | Plantaginaceae |
| Plantago princeps var. laxifolia | Plantago | Plantaginaceae |
| Platanus sp. | Sycamore | Platanaceae |
| Platycerium bifurcatum | Staghorn fern, elkhorn fern | Polypodiaceae |
| Platycerium sp. | Staghorn fern, elkhorn fern | Polypodiaceae |
| Platycladus orientalis | Chinese arborvitae | Cupressaceae |
| Platymiscium stipulare | Platymiscium | Fabaceae |
| Plectranthus amboinicus | False oregano, Mexican oregano, Greek oregano, Cuban oregano | Lamiaceae |
| Plectranthus fruticosus | Mint leaf | Lamiaceae |
| Plectranthus madagascariensis | Variegated mint leaf | Lamiaceae |
| Plectranthus parviflorus | Alaala wai nui wahine | Lamiaceae |
| Plectranthus scutellarioides | Coleus | Lamiaceae |
| Plectranthus sp. | Plectranthus | Lamiaceae |
| Plectranthus verticillatus | Plectranthus | Lamiaceae |
| Pleiostachya pruinosa | Wheat calathea | Marantaceae |
| Pleomele aurea | Halapepe | Asparagaceae |
| Pleomele auwahiensis | Halapepe | Asparagaceae |
| Pleomele fernaldii | Halapepe | Asparagaceae |
| Pluchea carolinensis | Sourbush | Asteraceae |
| Pluchea indica | Indian fleabane | Asteraceae |
| Pluchea x fosbergii | Marsh fleabane | Asteraceae |
| Plumbago auriculata | Cape plumbago, leadwort | Plumbaginaceae |
| Plumbago zeylanica | Iliee | Plumbaginaceae |
| Plumeria obtusa | Plumeria, frangipani | Apocynaceae |
| Plumeria pudica | Wild plumeria, white frangipani | Apocynaceae |
| Plumeria rubra | Plumeria, frangipani | Apocynaceae |
| Poa annua | Annual bluegrass | Poaceae |
| Poa pratensis | Kentucky bluegrass | Poaceae |
| Podocarpus gracilior | Yellowwood, fern pine | Podocarpaceae |
| Podocarpus macrophyllus | Yew pine, Japanese yew | Podocarpaceae |
| Podocarpus sp. | Podocarpus | Podocarpaceae |
| Podranea ricasoliana | Pink trumpet vine | Bignoniaceae |
| Pogostemon cablin | Patchouli | Lamiaceae |
| Polianthes tuberosa | Tuberose | Asparagaceae |
| Polyalthia longifolia var. pendula | Mast tree | Annonaceae |
| Polycarpon tetraphyllum | Polycarpon | Caryophyllaceae |
| Polygala paniculata | Milkwort, root beer plant | Polygalaceae |
| Polygala virgata | Purple broom | Polygalaceae |
| Polygala x dalmaisiana | Milkwort, dalmasiana, sweet pea shrub | Polygalaceae |
| Polygonum aviculare | Prostrate knotweed | Polygonaceae |
| Polypodium formosanum | Caterpillar fern, grub fern | Polypodiaceae |
| Polypodium pellucidum | Ae, polypodium | Polypodiaceae |
| Polypogon interruptus | Ditch polypogon | Poaceae |
| Polypogon monspeliensis | Annual beard grass, Rabbitfoot grass | Poaceae |
| Polypogon sp. | Polypogon | Poaceae |
| Polyscias filicifolia | Panax, fern-leaf aralia, angelica | Araliaceae |
| Polyscias fruticosa | Panax, parsley panax, ming aralia | Araliaceae |
| Polyscias guilfoylei | Panax | Araliaceae |
| Polyscias hawaiensis | Ohe | Araliaceae |
| Polyscias kavaiensis | Oheohe | Araliaceae |
| Polyscias oahuensis | Ohe, ohe mauka | Araliaceae |
| Polyscias racemosa | Munroidendron | Araliaceae |
| Polyscias sandwicensis | Ohe, ohe makai, ohe kukuluaeo, oheohe, ohekai | Araliaceae |
| Polyscias scutellaria | Panax, round leaved panax | Araliaceae |
| Polyscias sp. | Panax | Araliaceae |
| Polystichum haleakalense | Polystichum | Dryopteridaceae |
| Polystichum hillebrandii | Kaupu, papaoi, polystichum | Dryopteridaceae |
| Polystichum sp. | Polystichum | Dryopteridaceae |
| Pometia pinnata | Fijian longan, island lychee, langsir | Sapindaceae |
| Pontederia cordata | Pickerel weed | Pontederiaceae |
| Pontederia cordata var. lancifolia | Pickerel weed | Pontederiaceae |
| Poranopsis paniculata | Bridal bouquet | Convolvulaceae |
| Porophyllum ruderale | Yerba porosa | Asteraceae |
| Portea petropolitana | Portea | Bromeliaceae |
| Portulaca amilis | Paraguayan purslane | Portulacaceae |
| Portulaca grandiflora | Moss rose | Portulacaceae |
| Portulaca lutea | Ihi | Portulacaceae |
| Portulaca molokiniensis | Ihi | Portulacaceae |
| Portulaca oleracea | Pigweed | Portulacaceae |
| Portulaca pilosa | Hairy pigweed | Portulacaceae |
| Portulaca sp. | Portulaca | Portulacaceae |
| Portulaca spnovum | Ihi | Portulacaceae |
| Portulaca umbraticola | Wingpod purslane cv. 'wildfire' | Portulacaceae |
| Portulaca villosa | Ihi | Portulacaceae |
| Portulacaria afra | Miniature jade plant, purslane tree | Portulacaceae |
| Posoqueria latifolia | Tree jasmine | Rubiaceae |
| Potinara sp. | Brassavola, Cattleya, Laelia and Sophronitis hybrid orchids | Orchidaceae |
| Pouteria caimito | Abiu fruit | Sapotaceae |
| Pouteria campechiana | Eggfruit, canistel | Sapotaceae |
| Pouteria sandwicensis | Alaa | Sapotaceae |
| Pouteria sapota | Mamey sapote, mammee | Sapotaceae |
| Prestoea acuminata var. montana | Mountain cabbage palm | Arecaceae |
| Pritchardia arecina | Loulu | Arecaceae |
| Pritchardia forbesiana | Loulu | Arecaceae |
| Pritchardia glabrata | Loulu | Arecaceae |
| Pritchardia hillebrandii | Loulu lelo | Arecaceae |
| Pritchardia kaalae | Loulu | Arecaceae |
| Pritchardia maideniana | Loulu | Arecaceae |
| Pritchardia martii | Loulu | Arecaceae |
| Pritchardia mitiaroana | Mitiaro palm | Arecaceae |
| Pritchardia munroi | Loulu | Arecaceae |
| Pritchardia pacifica | Fiji fan palm | Arecaceae |
| Pritchardia remota | Nihoa fan palm | Arecaceae |
| Pritchardia schattaueri | Loulu, giant pritchardia | Arecaceae |
| Pritchardia sp. | Loulu | Arecaceae |
| Pritchardia thurstonii | Long inflorescence Fiji fan palm | Arecaceae |
| Pritchardia woodii | Wood's pritchardia | Arecaceae |
| Proiphys amboinensis | Brisbane lily, Cardwell lily | Liliaceae |
| Prosopis glandulosa | Honey mesquite | Fabaceae |
| Prosopis juliflora | Long thorn kiawe, big-leafed kiawe, algaroba, mesquite | Fabaceae |
| Prosopis pallida | Kiawe, keawe, algaroba, mesquite | Fabaceae |
| Prosopis sp. | Hybrid kiawe? | Fabaceae |
| Protea aristata | Ladi smith sugarbush, small pine sugarbush | Proteaceae |
| Protea aurea | Long bud sugarbush | Proteaceae |
| Protea cynaroides | King protea | Proteaceae |
| Protea grandiceps | Princess protea, red sugarbush | Proteaceae |
| Protea lepidocarpodendron | Black bearded protea, black bearded sugarbush | Proteaceae |
| Protea neriifolia | Oleander leaved protea | Proteaceae |
| Protea neriifolia x latifolia | Protea | Proteaceae |
| Protea repens | Sugar bush | Proteaceae |
| Protea sp. | Protea | Proteaceae |
| Prunella vulgaris | Selfheal | Lamiaceae |
| Prunus armeniaca | Apricot | Rosaceae |
| Prunus avium | Sweet cherry | Rosaceae |
| Prunus campanulata | Taiwan cherry | Rosaceae |
| Prunus cerasifera | Cherry plum, purple leaf plum | Rosaceae |
| Prunus cerasifera x salicina | Methley plum, cherry plum | Rosaceae |
| Prunus domestica | Plum | Rosaceae |
| Prunus domestica subsp. italica | Green gage plum | Rosaceae |
| Prunus persica | Peach | Rosaceae |
| Prunus persica var. nucipersica | Nectarine | Rosaceae |
| Prunus persica var. persica | Peach | Rosaceae |
| Prunus salicina | Plum | Rosaceae |
| Prunus sp. | Prunus | Rosaceae |
| Pseudananas sagenarius | Pseudananas | Bromeliaceae |
| Pseudelephantopus spicatus | Dog's tongue | Asteraceae |
| Pseuderanthemum carruthersii | Golden eldorado, purple pseuderanthemum | Acanthaceae |
| Pseuderanthemum laxiflorum | Purple glory | Acanthaceae |
| Pseudobombax ellipticum | Shaving bush tree | Malvaceae |
| Pseudognaphalium pensylvanica | Cudweed | Asteraceae |
| Pseudognaphalium sandwicensium | Enaena, puheu | Asteraceae |
| Pseudognaphalium sandwicensium var. molokaiense | Enaena, puheu | Asteraceae |
| Pseudognaphalium sandwicensium var. sandwicensium | Enaena | Asteraceae |
| Pseudognaphalium sp. | Enaena, gnaphalium | Asteraceae |
| Pseudogynoxys chenopodioides | Mexican flame vine, orange flowered senecio | Asteraceae |
| Pseudomussaenda flava | Dwarf mussaenda, white wing | Rubiaceae |
| Pseudopanax lessonii | Houpara | Araliaceae |
| Pseudophegopteris keraudreniana | Waimakanui | Thelypteridaceae |
| Pseudorhipsalis ramulosa | Pseudorhipsalis | Cactaceae |
| Psidium cattleianum | Strawberry guava, waiawi ulaula | Myrtaceae |
| Psidium guajava | Guava | Myrtaceae |
| Psilotum complanatum | Moa nahele, pipi, flat-stemmed whiskfern | Psilotaceae |
| Psilotum nudum | Moa, whisk fern | Psilotaceae |
| Psophocarpus tetragonolobus | Wing bean | Fabaceae |
| Psychotria hawaiiensis | Kopiko ula | Rubiaceae |
| Psychotria kaduana | Kopiko kea | Rubiaceae |
| Psychotria mariniana | Kopiko | Rubiaceae |
| Psychotria mauiensis | Opiko | Rubiaceae |
| Psychotria sp. | Kopiko | Rubiaceae |
| Psydrax odorata | Alahee | Rubiaceae |
| Pteridium aquilinum subsp. decompositum | Kilau, bracken fern | Hypolepidaceae |
| Pteris cretica | Oali, cretan brake | Pteridaceae |
| Pteris ensiformis | Silver lace fern, slender brake fern | Pteridaceae |
| Pteris excelsa | Waimakanui | Pteridaceae |
| Pteris hillebrandii | Pteris | Pteridaceae |
| Pteris irregularis | Mana, ahewa, iwa puakea | Pteridaceae |
| Pteris sp. | Pteris | Pteridaceae |
| Pteris tremula | Australian brake | Pteridaceae |
| Pteris vittata | Ladder brake | Pteridaceae |
| Pterocarpus indicus | Narra, bloodwood, Burmese rosewood | Fabaceae |
| Pterocarpus indicus f. echinatus | Prickly narra | Fabaceae |
| Ptychosperma elegans | Solitaire palm | Arecaceae |
| Ptychosperma macarthurii | MacArthur palm | Arecaceae |
| Ptychosperma sp. | Ptychosperma | Arecaceae |
| Pueraria montana var. lobata | Kudzu | Fabaceae |
| Pummelo sp. | Pummelo | Rutaceae |
| Punica granatum | Pomegranate | Punicaceae |
| Puya mirabilis | Puya | Bromeliaceae |
| Pyracantha angustifolia | Firethorn | Rosaceae |
| Pyracantha crenatoserrata | Firethorn | Rosaceae |
| Pyracantha koidzumii | Formosa firethorn | Rosaceae |
| Pyracantha sp. | Firethorn | Rosaceae |
| Pyrostegia venusta | Flame vine | Bignoniaceae |
| Pyrus communis | Common pear, European pear | Rosaceae |
| Pyrus pyrifolia var. culta | Asian pear, Japanese pear, sand pear | Rosaceae |
| Quercus agrifolia | California live oak | Fagaceae |
| Quercus sp. | Oak | Fagaceae |
| Quercus suber | Cork oak | Fagaceae |
| Quercus virginiana | Live oak | Fagaceae |
| Quesnelia sp. | Quesnelia | Bromeliaceae |
| Quisqualis indica | Rangoon creeper | Combretaceae |
| Radermachera sinica | China doll | Bignoniaceae |
| Rafia farinifera | Rafia palm | Arecaceae |
| Randia formosa | Blackberry jam fruit, raspberry bush, jasmin de Rosa | Rubiaceae |
| Randia sp. | Indigoberry | Rubiaceae |
| Raoulia australis | Raoulia, common mat daisy | Asteraceae |
| Raphanus raphanistrum | Wild radish | Brassicaceae |
| Raphanus sativus | Wild radish, radish, daikon | Brassicaceae |
| Raphia farinifera | Rafia palm | Arecaceae |
| Raphiolepis umbellata | Yeddo hawthorn, kokutan, sharimbai | Rosaceae |
| Rauvolfia sandwicensis | Hao | Apocynaceae |
| Ravenala madagascariensis | Traveler's palm | Strelitziaceae |
| Ravenea rivularis | Majesty palm | Arecaceae |
| Reichardia picroides | Common brighteyes | Asteraceae |
| Reichardia tingitana | False sow thistle | Asteraceae |
| Rhamnus californica | California buckthorn | Rhamnaceae |
| Rhaphiolepis sp. | Rhaphiolepis | Rosaceae |
| Rhaphiolepis umbellata | Yeddo hawthorn | Rosaceae |
| Rhaphiolepis x delacourii | Enchantress hawthorn | Rosaceae |
| Rhapis excelsa | Bamboo palm, rhapis palm | Arecaceae |
| Rhapis humilis | Slender lady palm, shuro-chiku | Arecaceae |
| Rhapis subtilis | Dwarf lady palm, Thai lady palm | Arecaceae |
| Rheum rhabarbarum | Rhubarb | Polygonaceae |
| Rhipsalis sp. | Rhipsalis | Cactaceae |
| Rhizophora mangle | Red mangrove | Rhizophoraceae |
| Rhododendron dielsianum | Rhododendron | Ericaceae |
| Rhododendron eriocarpum | Dwarf indica azalea, gumpo azalea | Ericaceae |
| Rhododendron jasminiflorum | Rhododendron | Ericaceae |
| Rhododendron laetum | Rhododendron | Ericaceae |
| Rhododendron sp. | Rhododendron, vireya, azalea | Ericaceae |
| Rhododendron zoelleri | Rhododendron | Ericaceae |
| Rhodomyrtus tomentosa | Downy rose myrtle | Myrtaceae |
| Rhus sandwicensis | Neneleau, Hawaiian sumac | Anacardiaceae |
| Rhynchospora caduca | Anglestem beaksedge | Cyperaceae |
| Rhynchospora chinensis subsp. spiciformis | Spiked beaksedge | Cyperaceae |
| Rhynchospora sp. | Beaksedge | Cyperaceae |
| Richardia brasiliensis | Richardia | Rubiaceae |
| Ricinus communis | Castor bean | Euphorbiaceae |
| Rivina humilis | Coral berry, rouge plant | Petiveriaceae |
| Roldana petasitis | Velvet groundsel | Asteraceae |
| Rollinia deliciosa | Wild sugar apple | Annonaceae |
| Rosa chinensis | Lokelani rose | Rosaceae |
| Rosa laevigata | Cherokee rose | Rosaceae |
| Rosa sp. | Rose | Rosaceae |
| Rosmarinus officinalis | Rosemary | Lamiaceae |
| Rotheca incisa | Musical note plant, morning kiss, witches tongue | Verbenaceae |
| Roystonea regia | Royal palm, Cuban palm | Arecaceae |
| Rubus argutus | Blackberry | Rosaceae |
| Rubus discolor | Himalayan blackberry | Rosaceae |
| Rubus ellipticus | Yellow Himalayan raspberry | Rosaceae |
| Rubus glaucus | Andean raspberry | Rosaceae |
| Rubus hawaiensis | Akala | Rosaceae |
| Rubus macraei | Akala | Rosaceae |
| Rubus niveus | Mysore raspberry, hill raspberry | Rosaceae |
| Rubus rosifolius | Thimbleberry, olaa | Rosaceae |
| Rubus sp. | Rubus | Rosaceae |
| Ruellia blechum | Blechum | Acanthaceae |
| Ruellia brevifolia | Ruellia | Acanthaceae |
| Ruellia brittoniana | Mexican petunia | Acanthaceae |
| Ruellia chartacea | Ruellia | Acanthaceae |
| Ruellia elegans | Ruellia | Acanthaceae |
| Ruellia macrantha | Christmas pride | Acanthaceae |
| Ruellia squarrosa | Ruellia | Acanthaceae |
| Rumex acetosella | Sheep sorrel | Polygonaceae |
| Rumex giganteus | Pawale, uhauhako | Polygonaceae |
| Rumex spinosus | Spiny emex, devil's thorn, prickly doc | Polygonaceae |
| Rumohra adiantiformis | Leather fern, leather-leaf fern | Dryopteridaceae |
| Ruppia maritima | Ditchgrass | Ruppiaceae |
| Russelia equisetiformis | Firecracker plant, coral plant | Scrophulariaceae |
| Ruta graveolens | Rue | Rutaceae |
| Ruttya fruticosa | Jammy mouth, rabbit ears, hummingbird plant | Acanthaceae |
| Rytidosperma pilosum | Rytidosperma | Poaceae |
| Rytidosperma semiannulare | Rytidosperma | Poaceae |
| Rytidosperma sp. | Rytidosperma | Poaceae |
| Sabal palmetto | Cabbage palmetto, Florida palmetto | Arecaceae |
| Saccharum officinarum | Ko, sugarcane | Poaceae |
| Saccharum sp. | Cane | Poaceae |
| Saccharum spontaneum | Wild sugarcane | Poaceae |
| Sacciolepis indica | Glenwood grass | Poaceae |
| Sadleria cyatheoides | Amau | Blechnaceae |
| Sadleria cyatheoides x pallida | Amau | Blechnaceae |
| Sadleria pallida | Amau | Blechnaceae |
| Sadleria souleyetiana | Amau | Blechnaceae |
| Sadleria sp. | Amau | Blechnaceae |
| Sadleria squarrosa | Amau, apuu, puaa, ehu ehu | Blechnaceae |
| Sagina japonica | Japanese pearlwort | Caryophyllaceae |
| Sagina procumbens | Procumbent pearlwort | Caryophyllaceae |
| Sagina subulata | Pearlwort, Irish moss | Caryophyllaceae |
| Sagittaria latifolia | Broadleaf arrowhead | Alismataceae |
| Saintpaulia ionantha | African violet | Gesneriaceae |
| Salix babylonica | Weeping willow | Salicaceae |
| Salix sp. | Willow | Salicaceae |
| Salsola tragus | Tumbleweed | Amaranthaceae |
| Salvia coccinea | Scarlet sage, lililehua, Texas sage | Lamiaceae |
| Salvia elegans | Pineapple sage | Lamiaceae |
| Salvia farinacea | Victoria blue sage | Lamiaceae |
| Salvia hispanica | Chia | Lamiaceae |
| Salvia involucrata | Rose leaf sage, rosebud salvia | Lamiaceae |
| Salvia leucantha | Mexican bush sage | Lamiaceae |
| Salvia madrensis | Forsythia sage, big yellow sage | Lamiaceae |
| Salvia occidentalis | West Indian sage | Lamiaceae |
| Salvia officinalis | Sage | Lamiaceae |
| Salvia procurrens | Salvia | Lamiaceae |
| Salvia sp. | Sage | Lamiaceae |
| Salvia splendens | Scarlet sage | Lamiaceae |
| Salvinia minima | Water spangles | Salviniaceae |
| Salvinia molesta | Giant salvinia | Salviniaceae |
| Samanea saman | Monkeypod | Fabaceae |
| Sambucus nigra | Mexican elderberry | Adoxaceae |
| Sanchezia speciosa | Sanchezia | Acanthaceae |
| Sandoricum koetjape | Santol | Meliaceae |
| Sanicula purpurea | Sanicula | Apiaceae |
| Sanicula sandwicensis | Sanicula | Apiaceae |
| Sansevieria trifasciata | Mother in law's tongue, snake plant | Asparagaceae |
| Santalum ellipticum | Iliahialoe, coast sandalwood | Santalaceae |
| Santalum haleakalae var. haleakalae | Iliahi, Haleakala sandalwood | Santalaceae |
| Santalum haleakalae var. lanaiense | Iliahi | Santalaceae |
| Santalum paniculatum | Iliahi | Santalaceae |
| Santalum sp. | Sandalwood | Santalaceae |
| Santolina chamaecyparissus | Gray santolina, lavender cotton | Asteraceae |
| Sanvitalia speciosa | Creeping zinnia, Mexican zinnia, sunbini | Asteraceae |
| Sapindus saponaria | Ae, manele | Sapindaceae |
| Saraca cauliflora | Saraca | Fabaceae |
| Satureja hortensis | Summer savory | Lamiaceae |
| Sauropus androgynus | Star gooseberry, sweet leaf, katuk | Phyllanthaceae |
| Sauvagesia erecta | Creole tea | Ochnaceae |
| Saxifraga stolonifera | Strawberry begonia, roving sailor | Saxifragaceae |
| Scaevola chamissoniana | Naupaka kuahiwi | Goodeniaceae |
| Scaevola coriacea | Dwarf naupaka | Goodeniaceae |
| Scaevola gaudichaudii | Naupaka kuahiwi | Goodeniaceae |
| Scaevola taccada | Naupaka | Goodeniaceae |
| Schaueria flavicoma | Golden plume | Acanthaceae |
| Schedonorus arundinaceus | Festuca | Poaceae |
| Scheelea butyracea | Yagua palm, American oil palm | Arecaceae |
| Schefflera actinophylla | Octopus tree, umbrella plant | Araliaceae |
| Schefflera arboricola | Dwarf umbrella plant | Araliaceae |
| Schefflera elegantissima | False aralia | Araliaceae |
| Schefflera polybotrya | Schefflera | Araliaceae |
| Schenkia sebaeoides | Awiwi | Gentianaceae |
| Schiedea adamantis | Schiedea | Caryophyllaceae |
| Schiedea diffusa subsp. diffusa | Shiedea | Caryophyllaceae |
| Schiedea globosa | Schiedea | Caryophyllaceae |
| Schiedea haleakalensis | Schiedea | Caryophyllaceae |
| Schiedea jacobii | Schiedea | Caryophyllaceae |
| Schiedea laui | Schiedea | Caryophyllaceae |
| Schiedea menziesii | Schiedea | Caryophyllaceae |
| Schiedea pubescens | Ma oli oli | Caryophyllaceae |
| Schiedea salicaria | Schiedea | Caryophyllaceae |
| Schiedea sp. | Schiedea | Caryophyllaceae |
| Schiedea verticillata | Nihoa schiedea | Caryophyllaceae |
| Schinus molle | California pepper tree, pepper tree | Anacardiaceae |
| Schinus terebinthifolius | Brazilian pepper tree, Christmas berry | Anacardiaceae |
| Schizachyrium condensatum | Tufted beardgrass | Poaceae |
| Schizaea robusta | Oalii makalii, haili o Pua, toothbrush fern | Schizaeaceae |
| Schizostachyum brachycladum | Sacred Bali bamboo | Poaceae |
| Schlumbergera truncata | Crab cactus, christmas cactus | Cactaceae |
| Schlumbergera x buckleyi | Christmas cactus | Cactaceae |
| Schoenoplectus californicus | California bulrush | Cyperaceae |
| Schoenoplectus juncoides | Rock bulrush | Cyperaceae |
| Schoenoplectus sp. | Bulrush | Cyperaceae |
| Scilla peruviana | Portuguese Squill | Asparagaceae |
| Scleria testacea | Nutgrass | Cyperaceae |
| Scoparia sp. | Scoparia | Scrophulariaceae |
| Scutellaria javanica | Skull cap | Lamiaceae |
| Scutellaria suffrutescens | Skull cap | Lamiaceae |
| Secale cereale | Rye | Poaceae |
| Sechium edule | Chayote, pipinella | Cucurbitaceae |
| Sedum lineare | Carpet sedum | Crassulaceae |
| Sedum morganianum | Burrow's tail, donkey's tail | Crassulaceae |
| Sedum rubrotinctum | Jellybean plant, pork and beans | Crassulaceae |
| Sedum tetractinum | Chinese sedum | Crassulaceae |
| Selaginella arbuscula | Lepelepe a moa | Selaginellaceae |
| Selaginella erythropus | Ruby red spikemoss | Selaginellaceae |
| Selaginella plana | Cyperus club moss, spikemoss | Selaginellaceae |
| Selaginella sp. | Spikemoss | Selaginellaceae |
| Selaginella stellata | Starry spikemoss | Selaginellaceae |
| Selaginella umbrosa | Red spikemoss | Selaginellaceae |
| Selaginella uncinata | Blue spikemoss | Selaginellaceae |
| Sempervivum arachnoideum | Cobweb houseleek | Crassulaceae |
| Sempervivum calcareum | Common houseleek, roof house leek | Crassulaceae |
| Sempervivum sp. | Sempervivum | Crassulaceae |
| Senecio cineraria | Dusty miller, silver ragwort | Asteraceae |
| Senecio crassissimus | Vertical leaf senecio | Asteraceae |
| Senecio jacobsenii | Weeping jade, trailing jade, vining jade | Asteraceae |
| Senecio madagascariensis | Fireweed | Asteraceae |
| Senecio mandraliscae | Blue finger | Asteraceae |
| Senecio radicans | String of bananas | Asteraceae |
| Senecio rowleyanus | Bead plant, string of beads | Asteraceae |
| Senecio sp. | Senecio | Asteraceae |
| Senecio sylvaticus | Wood groundsel | Asteraceae |
| Senecio talinoides | Jolly gray | Asteraceae |
| Senecio vulgaris | Common groundsel | Asteraceae |
| Senna alata | Candlebush | Fabaceae |
| Senna artemisioides | Feathery senna | Fabaceae |
| Senna didymobotrya | Popcorn senna | Fabaceae |
| Senna gaudichaudii | Kolomona | Fabaceae |
| Senna multijuga | False sicklepod | Fabaceae |
| Senna occidentalis | Coffee senna | Fabaceae |
| Senna pendula | Pendant senna | Fabaceae |
| Senna polyphylla | Desert cassia, retama prieta | Fabaceae |
| Senna septemtrionalis | Senna, kolomona, kalamona | Fabaceae |
| Senna siamea | Pheasant wood, kassod tree | Fabaceae |
| Senna sp. | Senna | Fabaceae |
| Senna spectabilis | Spectacular cassia | Fabaceae |
| Senna surattensis | Scrambled egg plant | Fabaceae |
| Sequoia sempervirens | Redwood | Taxodiaceae |
| Serenoa repens | Saw palmetto | Arecaceae |
| Serianthes kanehirae | Ukall, monkeypod | Fabaceae |
| Serissa foetida | Snowrose, tree of a thousand stars | Rubiaceae |
| Sesbania grandiflora | Sesban, agati, dok khae, katuray | Fabaceae |
| Sesbania punicea | Rattlebox | Fabaceae |
| Sesbania sesban | Sesban | Fabaceae |
| Sesbania tomentosa | Ohai | Fabaceae |
| Sesuvium portulacastrum | Akulikuli, sea purslane | Aizoaceae |
| Sesuvium verrucosum | Verrucose sea purslane | Aizoaceae |
| Setaria palmifolia | Palmgrass | Poaceae |
| Setaria parviflora | Yellow foxtail | Poaceae |
| Setaria sphacelata | African bristle grass | Poaceae |
| Setaria sphacelata var. anceps | Golden millet | Poaceae |
| Setaria verticillata | Bristly foxtail | Poaceae |
| Sherardia arvensis | Blue fieldmadder | Rubiaceae |
| Shorea robusta | Sal, shala tree | Dipterocarpaceae |
| Sicyos anunu | Anunu | Cucurbitaceae |
| Sicyos erostratus | Anunu | Cucurbitaceae |
| Sicyos hispidus | Anunu | Cucurbitaceae |
| Sicyos macrophyllus | Anunu | Cucurbitaceae |
| Sicyos maximowiczii | Anunu | Cucurbitaceae |
| Sicyos pachycarpus | Anunu | Cucurbitaceae |
| Sicyos sp. | Anunu | Cucurbitaceae |
| Sida acuta | Sida | Malvaceae |
| Sida ciliaris | Red ilima, sida | Malvaceae |
| Sida cordifolia | Mallow plant | Malvaceae |
| Sida fallax | Ilima | Malvaceae |
| Sida rhombifolia | Sida, Cuban jute | Malvaceae |
| Sida sp. | Sida | Malvaceae |
| Sida spinosa | Prickly sida | Malvaceae |
| Sidastrum micranthum | Sand mallow | Malvaceae |
| Sideroxylon persimile | Bully tree | Sapotaceae |
| Sigesbeckia orientalis | Small yellow crown beard | Asteraceae |
| Sigmatostalix radicans | Sigmatostalix orchid | Orchidaceae |
| Silene alexandri | Alexander's catchfly | Caryophyllaceae |
| Silene armeria | Sweet William catchfly | Caryophyllaceae |
| Silene gallica | Small flowered catchfly | Caryophyllaceae |
| Silene struthioloides | Catchfly | Caryophyllaceae |
| Silybum marianum | Milk thistle, Mary's thistle | Asteraceae |
| Simarouba glauca | Olivo, paradise tree | Simaroubaceae |
| Sisymbrium altissimum | Tumble mustard | Brassicaceae |
| Sisymbrium officinale | Hedge mustard | Brassicaceae |
| Sisyrinchium acre | Mauu laili, mauu houla ili | Iridaceae |
| Sisyrinchium exile | Sisyrinchium | Iridaceae |
| Smallanthus sonchifolius | Yacon, Peruvian ground apple | Asteraceae |
| Smilax melastomifolia | Hoi kuahiwi | Smilacaceae |
| Solandra maxima | Cup of gold | Solanaceae |
| Solanum americanum | Popolo, glossy nightshade | Solanaceae |
| Solanum betaceum | Tamarillo, tree tomato | Solanaceae |
| Solanum capsicoides | Cockroach berry, kikania | Solanaceae |
| Solanum gilo | Turkish eggplant, scarlet eggplant | Solanaceae |
| Solanum linnaeanum | Apple of sodom | Solanaceae |
| Solanum lycopersicum | Tomato | Solanaceae |
| Solanum melongena | Eggplant | Solanaceae |
| Solanum muricatum | Pepino dulce, melon pear | Solanaceae |
| Solanum nelsonii | Popolo | Solanaceae |
| Solanum pseudocapsicum | Jerusalem cherry | Solanaceae |
| Solanum quitoense | Naranjilla, lulo, little orange | Solanaceae |
| Solanum robustum | Shrubby nightshade | Solanaceae |
| Solanum rostratum | Solanum | Solanaceae |
| Solanum seaforthianum | Vining solanum | Solanaceae |
| Solanum sp. | Unknown solanum | Solanaceae |
| Solanum torvum | Turkeyberry, chundakkai, pea eggplant, makhua phuang | Solanaceae |
| Solanum tuberosum | Potato | Solanaceae |
| Solanum wendlandii | Potato vine | Solanaceae |
| Solidago canadensis | Canada goldenrod | Asteraceae |
| Sonchus asper | Prickly sow thistle | Asteraceae |
| Sonchus oleraceus | Sow thistle | Asteraceae |
| Sophora chrysophylla | Mamane | Fabaceae |
| Sophora tomentosa | Yellow necklace pod, silverbush | Fabaceae |
| Sorghum bicolor | Sorghum | Poaceae |
| Sorghum halepense | Johnson grass | Poaceae |
| Sorghum sp. | Sorghum | Poaceae |
| Spathiphyllum sp. | Peace lily, spathe flower | Araceae |
| Spathiphyllum wallisii | Peace lily, spathe flower | Araceae |
| Spathodea campanulata | African tulip tree | Bignoniaceae |
| Spathoglottis plicata | Philippine ground orchid | Orchidaceae |
| Spathoglottis sp. | Spathoglottis | Orchidaceae |
| Spergularia marina | Saltmarsh sand spurry | Caryophyllaceae |
| Spermacoce assurgens | Buttonweed | Rubiaceae |
| Spermacoce exilis | Spermacoce | Rubiaceae |
| Spermolepis hawaiiensis | Spermolepis | Apiaceae |
| Sphaeropteris cooperi | Australian tree fern | Cyatheaceae |
| Sphaeropteris sp. | Tree fern | Cyatheaceae |
| Sphagneticola trilobata | Wedelia | Asteraceae |
| Spinacia oleracea | Spinach | Amaranthaceae |
| Spiraea cantoniensis | Reeves' spirea, double bridal wreath | Rosaceae |
| Spirodela polyrhiza | Giant duck weed | Araceae |
| Spondias dulcis | Otaheite apple, ambarella | Anacardiaceae |
| Spondias mombin | Hog plum, jobo, yellow mombin | Anacardiaceae |
| Spondias purpurea | Jocote, Spanish plum | Anacardiaceae |
| Spondias sp. | Makok | Anacardiaceae |
| Sporobolus diandrus | Indian dropseed | Poaceae |
| Sporobolus domingensis | Coral dropseed | Poaceae |
| Sporobolus elongatus | Rat tail grass | Poaceae |
| Sporobolus indicus | Smutgrass | Poaceae |
| Sporobolus piliferus | Dropseed | Poaceae |
| Sporobolus pyramidatus | Dropseed | Poaceae |
| Sporobolus sp. | Dropseed | Poaceae |
| Sporobolus virginicus | Akiaki | Poaceae |
| Sprekelia formosissima | Jacobean lily | Liliaceae |
| Stachys arvensis | Staggerweed | Lamiaceae |
| Stachytarpheta australis | Branched porterweed | Verbenaceae |
| Stachytarpheta cayennensis | Vervain | Verbenaceae |
| Stachytarpheta jamaicensis | Jamaica vervain | Verbenaceae |
| Stachytarpheta mutabilis | Changeable vervain | Verbenaceae |
| Stapelia gigantea | Zulu-giant, giant toad plant | Apocynaceae |
| Stapelia sp. | Stapelia | Apocynaceae |
| Stellaria media | Common chickweed | Caryophyllaceae |
| Stemmadenia litoralis | Lechoso | Apocynaceae |
| Stenocereus griseus | Mexican organ pipe | Cactaceae |
| Stenogyne calycosa | Native mint | Lamiaceae |
| Stenogyne kamehamehae | Stenogyne | Lamiaceae |
| Stenogyne kauaulaensis | Stenogyne | Lamiaceae |
| Stenogyne microphylla | Native mint | Lamiaceae |
| Stenogyne rugosa | Maohiohi | Lamiaceae |
| Stenotaphrum secundatum | St. Augustine grass, centipede grass | Poaceae |
| Sterculia foetida | Stinky sterculia, hazel sterculia | Malvaceae |
| Stetsonia coryne | Toothpick cactus | Cactaceae |
| Stevia rebaudiana | Sweet leaf, sugar leaf, stevia | Asteraceae |
| Sticherus owhyhensis | Uluhe, unuhe | Gleicheniaceae |
| Stictocardia beraviensis | Crimson morning glory | Convolvulaceae |
| Stigmaphyllon ciliatum | Orchid vine, Brazilian golden vine | Malpighiaceae |
| Streblus pendulinus | Aiai | Moraceae |
| Strelitzia nicolai | White bird of paradise | Strelitziaceae |
| Strelitzia reginae | Bird of paradise | Strelitziaceae |
| Streptosolen jamesonii | Orange marmalade bush | Solanaceae |
| Strobilanthes dyerianus | Persian shield plant | Acanthaceae |
| Strobilanthes gossypina | Furry strobilanthes | Acanthaceae |
| Strobilanthes hamiltoniana | Chinese rain bell | Acanthaceae |
| Strobilanthes sp. | Strobilanthes | Acanthaceae |
| Stromanthe stromanthoides | Stromanthe | Marantaceae |
| Strongylodon macrobotrys | Blue jade vine | Fabaceae |
| Strongylodon ruber | Nuku iiwi, ka iiwi, nuku | Fabaceae |
| Stylosanthes scabra | Shrubby stylo | Fabaceae |
| Stylosanthes viscosa | Poor man's friend | Fabaceae |
| Suriana maritima | Bay cedar | Simaroubaceae |
| Sutera cordata | Bacopa | Scrophulariaceae |
| Swietenia humilis | Honduras mahogany, Mexican mahagony | Meliaceae |
| Swietenia macrophylla | Big leaf mahagony, Brazilian mahogany | Meliaceae |
| Swietenia mahagoni | Mahogany | Meliaceae |
| Swietenia sp. | Mahogany | Meliaceae |
| Syagrus amara | Overtop palm, moca palm | Arecaceae |
| Syagrus romanzoffiana | Queen palm | Arecaceae |
| Symphytum officinale | Common comfrey | Boraginaceae |
| Synadenium grantii | African milkbush | Euphorbiaceae |
| Syncarpia glomulifera | Turpentine tree | Myrtaceae |
| Synedrella nodiflora | Node weed, Cinderella weed | Asteraceae |
| Syngonium podophyllum | Arrowhead plant, nephthytis | Araceae |
| Syngonium sp. | Syngonium | Araceae |
| Synsepalum dulcificum | Miraculous berry, miracle fruit | Sapotaceae |
| Syzygium aromaticum | Clove | Myrtaceae |
| Syzygium cumini | Java plum | Myrtaceae |
| Syzygium jambos | Rose apple | Myrtaceae |
| Syzygium malaccense | Mountain apple | Myrtaceae |
| Syzygium megacarpum | Giant lau lau | Myrtaceae |
| Syzygium paniculatum | Magenta cherry | Myrtaceae |
| Syzygium samarangense | Waxapple, love apple, bell fruit, Java apple | Myrtaceae |
| Syzygium sandwicensis | Ohia ha | Myrtaceae |
| Syzygium sp. | Syzygium | Myrtaceae |
| Tabebuia aurea | Caribbean trumpet tree | Bignoniaceae |
| Tabebuia donnell-smithii | Primavera, gold tree, golden tree | Bignoniaceae |
| Tabebuia heterophylla | Pink trumpet tree, pink tecoma | Bignoniaceae |
| Tabebuia rosea | Pink tecoma, rosy trumpet tree | Bignoniaceae |
| Tabebuia serratifolia | Trumpet tree | Bignoniaceae |
| Tabebuia sp. | Trumpet tree | Bignoniaceae |
| Tabernaemontana africana | Samoan gardenia | Apocynaceae |
| Tabernaemontana divaricata | Crepe jasmine, coffee rose, paper gardenia, spiral gardenia | Apocynaceae |
| Tabernaemontana pachysiphon | Giant pinwheel flower | Apocynaceae |
| Tabernaemontana pandacaqui | Pandakaki, phut farang | Apocynaceae |
| Tabernaemontana sp. | Tabernaemontana | Apocynaceae |
| Tacca chantrieri | Batflower | Dioscoreaceae |
| Tacca leontopetaloides | Pia, Polynesian arrowroot | Dioscoreaceae |
| Tagetes erecta | African marigold, Aztec marigold | Asteraceae |
| Tagetes lemmonii | Mount Lemmon marigold, Copper Canyon daisy | Asteraceae |
| Tagetes lucida | Sweet scented marigold | Asteraceae |
| Tagetes minuta | Southern cone marigold, stinkweed, stinking Roger, muster Jonh Henry | Asteraceae |
| Talinum paniculatum | Jewels of Opar | Talinaceae |
| Talisia olivaeformis | Talisia, pitomba, guaya | Sapindaceae |
| Tamarindus indica | Tamarind | Fabaceae |
| Tamarix aphylla | Tamarisk, salt cedar | Tamaricaceae |
| Tamarix sp. | Tamarisk, salt cedar | Tamaricaceae |
| Tapeinochilos ananassae | Indonesian red wax ginger | Costaceae |
| Taraxacum officinale | Common dandelion, laulele, lauhele | Asteraceae |
| Taxandria juniperina | Juniper myrtle, swamp wattle, Warren river cedar | Myrtaceae |
| Taxodium distichum | Bald cypress | Taxodiaceae |
| Tecoma capensis | Cape honeysuckle | Bignoniaceae |
| Tecoma sp. | Trumpet bush | Bignoniaceae |
| Tecoma stans | Yellow tecoma | Bignoniaceae |
| Tecomanthe venusta | New Guinea creeper | Bignoniaceae |
| Tectaria gaudichaudii | Iwaiwa lau nui | Tectariaceae |
| Tectona grandis | Teak | Verbenaceae |
| Telopea sp. | Telopea | Proteaceae |
| Telosma cordata | Pakalana, Chinese violet, tonkin creeper | Asclepiadaceae |
| Tephrosia pumila | Furry tephrosia | Fabaceae |
| Tephrosia purpurea var. purpurea | Auhuhu, ahuhu | Fabaceae |
| Terminalia arjuna | Arjun tree | Combretaceae |
| Terminalia catappa | False kamani, tropical almond | Combretaceae |
| Terminalia ivorensis | Black afara, idigbo | Combretaceae |
| Terminalia kaernbachii | Okari nut, yellow terminalia | Combretaceae |
| Terminalia megalocarpa | Tropical almond | Combretaceae |
| Terminalia melanocarpa | Terminalia | Combretaceae |
| Terminalia microcarpa | Terminalia | Combretaceae |
| Terminalia myriocarpa | Jhalna | Combretaceae |
| Terminalia nitens | Terminalia | Combretaceae |
| Terminalia sp. | Terminalia | Combretaceae |
| Tetragonia tetragonioides | New Zealand spinach | Aizoaceae |
| Tetramolopium filiforme | Pamakani, Makua daisy, ridgetop tetramolopium | Asteraceae |
| Tetramolopium humile subsp. haleakalae | Pamakani, Haleakala tetramolopium | Asteraceae |
| Tetramolopium humile subsp. humile | Pamakani, Big Island alpine tetramolopium | Asteraceae |
| Tetramolopium remyi | Tetramolopium | Asteraceae |
| Tetramolopium rockii | Pamakani, Joseph Rock's tetramolopium, dune tetramolopium | Asteraceae |
| Tetramolopium sylvae | Pamakani, Rene Sylva's tetramolopium, seacliff tetramolopium | Asteraceae |
| Tetrapanax papyrifer | Chinese rice-paper plant, tung-tsau | Araliaceae |
| Tetrastigma pubinerve | Tetrastigma | Vitaceae |
| Tetrazygia bicolor | Tetrazygia | Melastomataceae |
| Thalia geniculata | Bent alligator flag | Marantaceae |
| Thalia sp. | Thalia | Marantaceae |
| Theobroma cacao | Cacao, cocoa tree | Malvaceae |
| Theobroma grandiflorum | Cupuacu | Malvaceae |
| Thespesia grandiflora | Maga tree | Malvaceae |
| Thespesia populnea | Milo | Malvaceae |
| Thevetia peruviana | Be-still tree, yellow oleander, lucky nut | Apocynaceae |
| Thevetia thevetioides | Giant thevetia | Apocynaceae |
| Thrinax parviflora | Broom palm, thatch palm, mountain thatch palm | Arecaceae |
| Thrinax radiata | Florida thatch palm | Arecaceae |
| Thryptomene saxicola | Rock thryptomene | Myrtaceae |
| Thryptomene sp. | Thryptomene | Myrtaceae |
| Thuja occidentalis | Eastern white cedar, American arbot-vitae | Cupressaceae |
| Thuja plicata | Western red cedar, giant arbor-vitae | Cupressaceae |
| Thuja sp. | Cedar | Cupressaceae |
| Thunbergia alata | Black-eyed Susan vine | Acanthaceae |
| Thunbergia battiscombei | Fuzzy thunbergia, blue boy, blue glory | Acanthaceae |
| Thunbergia coccinea | Scarlet thunbergia | Acanthaceae |
| Thunbergia erecta | Bush clock-vine, bush thunbergia, king's mantle | Acanthaceae |
| Thunbergia fragrans | Sweet clock-vine, white thunbergia | Acanthaceae |
| Thunbergia grandiflora | Trumpet vine, large-flowered thunbergia, Bengal trumpet | Acanthaceae |
| Thunbergia laurifolia | Blue trumpet vine, laurel-leaved thunbergia, purple allamanda | Acanthaceae |
| Thunbergia mysorensis | Dolls shoes | Acanthaceae |
| Thunbergia sp. | Clock vine | Acanthaceae |
| Thunbergia vogeliana | Thunbergia | Acanthaceae |
| Thymophylla tenuiloba | Lemon drop, Dahlberg Daisy, dog weed | Asteraceae |
| Thymus citriodorus | Lemon thyme | Lamiaceae |
| Thymus praecox subsp. arcticus | Creeping thyme | Lamiaceae |
| Thymus serpyllum | Wild thyme, creeping thyme | Lamiaceae |
| Thymus vulgaris | Thyme | Lamiaceae |
| Tibouchina granulosa | Glory tree | Melastomataceae |
| Tibouchina herbacea | Cane Tibouchina | Melastomataceae |
| Tibouchina longifolia | White flower Tibouchina | Melastomataceae |
| Tibouchina multiflora | Today-tomorrow Tibouchina | Melastomataceae |
| Tibouchina urvilleana | Glory bush | Melastomataceae |
| Tillandsia australis | Air plant | Bromeliaceae |
| Tillandsia crocata | Air plant | Bromeliaceae |
| Tillandsia cyanea | Pink quill, air plant | Bromeliaceae |
| Tillandsia gardneri | Tillandsia | Bromeliaceae |
| Tillandsia lindenii | Air plant, tillandsia | Bromeliaceae |
| Tillandsia polystachia | Air plant | Bromeliaceae |
| Tillandsia sp. | Air plant, tillandsia | Bromeliaceae |
| Tillandsia usneoides | Spanish moss, Pele's hair | Bromeliaceae |
| Tipuana tipu | Tipa, pride of Bolivia | Fabaceae |
| Tithonia diversifolia | Tree marigold | Asteraceae |
| Tithonia rotundifolia | Mexican sunflower | Asteraceae |
| Toona ciliata | Australian red cedar | Meliaceae |
| Torenia fournieri | Olaa beauty, wishbone flower | Linderniaceae |
| Torenia glabra | Olaa beauty, wishbone flower | Linderniaceae |
| Torenia sp. | Wishbone flower | Linderniaceae |
| Torilis arvensis | Spreading hedge parsley | Apiaceae |
| Touchardia latifolia | Olona | Urticaceae |
| Tournefortia argentea | Tree heliotrope | Heliotropiaceae |
| Trachelospermum asiaticum | Japanese star jasmine | Apocynaceae |
| Trachelospermum jasminoides | Confederate jasmine, star jasmine | Apocynaceae |
| Tradescantia fluminensis | White flowered wandering jew, green wandering jew | Commelinaceae |
| Tradescantia multiflora | Tahitian bridal veil | Commelinaceae |
| Tradescantia pallida | Purple heart, wandering jew | Commelinaceae |
| Tradescantia sillamontana | Cobweb spiderwort, hairy wandering jew | Commelinaceae |
| Tradescantia sp. | Tradescantia | Commelinaceae |
| Tradescantia spathacea | Oyster plant, rhoeo, wandering jew | Commelinaceae |
| Tradescantia zanonia | Mexican flag | Commelinaceae |
| Tradescantia zebrina | Wandering jew | Commelinaceae |
| Tragus berteronianus | Bur grass | Poaceae |
| Tredescantia zanonia | Mexican flag, cohitre blanco | Commelinaceae |
| Trema orientalis | Gunpowder tree | Cannabaceae |
| Trematolobelia macrostachys | Kolii | Campanulaceae |
| Trianthema portulacastrum | Trianthema | Aizoaceae |
| Tribulus cistoides | Nohu, puncture vine | Zygophyllaceae |
| Tribulus terrestris | Puncture vine | Zygophyllaceae |
| Trichosanthes cucumerina var. anguina | Snake gourd, long gourd | Cucurbitaceae |
| Tridax procumbens | Coat buttons | Asteraceae |
| Trifolium arvense | Rabbit-foot clover | Fabaceae |
| Trifolium campestre | Field clover | Fabaceae |
| Trifolium pratense var. sativum | Red clover | Fabaceae |
| Trifolium repens | White clover | Fabaceae |
| Trimezia martinicensis | Martinique trimezia | Iridaceae |
| Triplaris americana | Ant tree | Polygonaceae |
| Tripsacum dactyloides | Eastern gamagrass | Poaceae |
| Trisetum glomeratum | Pili uka | Poaceae |
| Trisetum inaequale | Trisetum | Poaceae |
| Tristellateia australasiae | Shower of gold climber, galphimia vine | Malpighiaceae |
| Triticum aestivum | Bread wheat | Poaceae |
| Triticum compactum | Club wheat | Poaceae |
| Triticum dicoccum | Emmer, farro | Poaceae |
| Triticum durum | Durum wheat, pasta wheat | Poaceae |
| Triticum spelta | Spelt | Poaceae |
| Triticum turanicum | Khorasan wheat, Kamut wheat | Poaceae |
| Triumfetta semitriloba | Sacramento bur | Malvaceae |
| Tropaeolum majus | Garden nasturtium | Tropaeolaceae |
| Tulbaghia violacea | Society garlic | Liliaceae |
| Tulipa sp. | Tulip | Liliaceae |
| Turnera ulmifolia | Yellow alder | Passifloraceae |
| Typha latifolia | Common cat tail, cattail | Typhaceae |
| Typha sp. | Cat tail, cattail | Typhaceae |
| Typhonodorum lindleyanum | Water banana | Araceae |
| Ulex europaeus | Gorse | Fabaceae |
| Ulmus parvifolia | Chinese elm | Ulmaceae |
| Ulmus sp. | Elm | Ulmaceae |
| Uncinia uncinata | Hook sedge | Cyperaceae |
| Unknown acanthaceae | Unknown acanthaceae | Acanthaceae |
| Unknown aizoaceae | Unknown aizoaceae | Aizoaceae |
| Unknown amaranthaceae | Unknown | Amaranthaceae |
| Unknown apiaceae | Unknown apiaceae | Apiaceae |
| Unknown araceae | Unknown araceae | Araceae |
| Unknown araucariaceae | Araucariaceae | Araucariaceae |
| Unknown arecaceae | Unknown palm | Arecaceae |
| Unknown asparagaceae | Unknown asparagaceae | Asparagaceae |
| Unknown asphodelaceae | Unknown asphodelaceae | Asphodelaceae |
| Unknown asteraceae | Unknown asteraceae | Asteraceae |
| Unknown bamboo | Unknown bamboo | Poaceae |
| Unknown bignoniaceae | Unknown bignoniaceae | Bignoniaceae |
| Unknown bromeliaceae | Unknown bromeliaceae | Bromeliaceae |
| Unknown cactaceae | Unknown cactaceae | Cactaceae |
| Unknown commelinaceae | Unknown commelinaceae | Commelinaceae |
| Unknown crassulaceae | Unknown crassulaceae | Crassulaceae |
| Unknown cucurbitaceae | Unknown cucurbitaceae | Cucurbitaceae |
| Unknown cupressaceae | Unknown cupressaceae | Cupressaceae |
| Unknown cyclanthaceae | Unknown cyclanthaceae | Cyclanthaceae |
| Unknown cyperaceae | Unknown sedge | Cyperaceae |
| Unknown dipsacaceae | Unknown dipsacaceae | Dipsacaceae |
| Unknown ericaceae | Unknown ericaceae | Ericaceae |
| Unknown euphorbiaceae | Unknown euphorbiaceae | Euphorbiaceae |
| Unknown fabaceae | Unknown fabaceae | Fabaceae |
| Unknown gymnosperm | Unknown gymnosperm | Unknown |
| Unknown iridaceae | Unknown iridaceae | Iridaceae |
| Unknown lamiaceae | Unknown lamiaceae | Lamiaceae |
| Unknown liliaceae | Unknown liliaceae | Liliaceae |
| Unknown malvaceae | Unknown malvaceae | Malvaceae |
| Unknown marantaceae | Unknown marantaceae | Marantaceae |
| Unknown myrtaceae | Unknown myrtaceae | Myrtaceae |
| Unknown orchidaceae | Unknown orchidaceae | Orchidaceae |
| Unknown passifloraceae | Unknown passifloraceae | Passifloraceae |
| Unknown piperaceae | Unknown piperaceae | Piperaceae |
| Unknown poaceae | Unknown grass | Poaceae |
| Unknown polygalaceae | Unknown polygolaceae | Polygalaceae |
| Unknown proteaceae | Unknown proteaceae | Proteaceae |
| Unknown pteridophyte | Unknown pteridophyte | Unknown |
| Unknown rhamnaceae | Unknown rhamnaceae | Rhamnaceae |
| Unknown rosaceae | Unknown rosaceae | Rosaceae |
| Unknown rubiaceae | Unknown rubiaceae | Rubiaceae |
| Unknown rutaceae | Unknown rutaceae | Rutaceae |
| Unknown scrophulariaceae | Snapdragon | Scrophulariaceae |
| Unknown sp. | Unknown | Unknown |
| Unknown theaceae | Unknown theaceae | Theaceae |
| Unknown vitaceae | Unknown vitaceae | Vitaceae |
| Unknown zingiberaceae | Unknown zingiberaceae | Zingiberaceae |
| Urena lobata | Bur mallow, pink burr | Malvaceae |
| Urera glabra | Opuhe | Urticaceae |
| Urochloa brizantha | Palisade grass | Poaceae |
| Urochloa decumbens | Signal grass | Poaceae |
| Urochloa humidicola | Creeping signal grass, koronivia grass | Poaceae |
| Urochloa mutica | California grass, para grass | Poaceae |
| Urochloa plantaginea | Brachiaria | Poaceae |
| Vaccinium berberidifolium | Ohelo | Ericaceae |
| Vaccinium calycinum | Ohelo | Ericaceae |
| Vaccinium calycinum var. montanum | Ohelo | Ericaceae |
| Vaccinium dentatum | Ohelo | Ericaceae |
| Vaccinium hybrid | Blueberry | Ericaceae |
| Vaccinium reticulatum | Ohelo | Ericaceae |
| Vaccinium sp. | Ohelo | Ericaceae |
| Vachellia farnesiana | Klu | Fabaceae |
| Vallisneria sp. | Eel grass | Hydrocharitaceae |
| Vanda merrillii | Vanda | Orchidaceae |
| Vanda sp. | Vanda | Orchidaceae |
| Vandenboschia davallioides | Palai hihi, kilau, creeping palai | Hymenophyllaceae |
| Vandenboschia draytoniana | Vandenboschia | Hymenophyllaceae |
| Vanilla planifolia | Vanilla | Orchidaceae |
| Vasconcellea x heilbornii | Babaco, mountain papaya | Caricaceae |
| Veitchia joannis | Joannis palm, niusawa palm | Arecaceae |
| Veitchia merrillii | Manila palm, Christmas palm | Arecaceae |
| Verbascum thapsus | Common mullein | Scrophulariaceae |
| Verbena litoralis | Vervain, owi | Verbenaceae |
| Verbena sp. | Verbena | Verbenaceae |
| Verbena tenuisecta | Moss verbena | Verbenaceae |
| Verbesina encelioides | Golden crown-beard | Asteraceae |
| Vernonanthura polyanthes | Tree aster, assa-peixe | Asteraceae |
| Vernonia elliptica | Climbing vernonia | Asteraceae |
| Vernonia sp. | Vernonia | Asteraceae |
| Veronica arvensis | Corn speedwell | Plantaginaceae |
| Veronica peregrina | Purslane speedwell | Plantaginaceae |
| Veronica serpyllifolia | Thyme-leaved speedwell | Plantaginaceae |
| Verschaffeltia splendida | Seychelles stilt palm, latanier latte | Arecaceae |
| Viburnum sp. | Viburnum | Adoxaceae |
| Viburnum suspensum | Viburnum | Caprifoliaceae |
| Vicia sativa subsp. nigra | Vetch | Fabaceae |
| Vicia sp. | Vetch | Fabaceae |
| Victoria amazonica | Giant water lily, Amazon water lily | Nymphaeaceae |
| Vigna caracalla | Corkscrew vine | Fabaceae |
| Vigna luteola | Hairypod cowpea | Fabaceae |
| Vigna marina | Beach pea, nanea | Fabaceae |
| Vigna o-wahuensis | Vigna | Fabaceae |
| Vigna speciosa | Wondering cow pea | Fabaceae |
| Vigna unguiculata subsp. sesquipedalis | Yard long bean, asparagus bean | Fabaceae |
| Vinca major | Vinca | Apocynaceae |
| Vinca sp. | Vinca | Apocynaceae |
| Viola chamissoniana subsp. tracheliifolia | Olopu, pamakani | Violaceae |
| Viola hederacea | Australian violet, ivy leaved violet | Violaceae |
| Viola sp. | Viola | Violaceae |
| Viola tricolor | Heatsease, johnny jump up, wild pansy | Violaceae |
| Viola x wittrockiana | Pansy | Violaceae |
| Vitex parviflora | Tree vitex, small flowered vitex, molave | Lamiaceae |
| Vitex rotundifolia | Pohinahina | Lamiaceae |
| Vitex trifolia | Vitex | Lamiaceae |
| Vitis sp. | Grape | Vitaceae |
| Vitis vinifera | Grape | Vitaceae |
| Vriesea glaziouana | Bromeliad | Bromeliaceae |
| Vriesea imperialis | Bromeliad | Bromeliaceae |
| Vriesea sp. | Bromeliad | Bromeliaceae |
| Vriesea splendens | Flaming sword | Bromeliaceae |
| Wahlenbergia gracilis | Wahlenbergia | Campanulaceae |
| Wahlenbergia marginata | Wahlenbergia | Campanulaceae |
| Wahlenbergia sp. | Wahlenbergia | Campanulaceae |
| Wallichia disticha | Distichous fishtail palm | Arecaceae |
| Waltheria indica | Uhaloa | Malvaceae |
| Warszewiczia coccinea | Chaconia, wild poinsettia, pride of Trinidad and Tobago | Rubiaceae |
| Washingtonia filifera | Californian fan palm | Arecaceae |
| Washingtonia robusta | Mexican fan palm | Arecaceae |
| Washingtonia sp. | Fan palm | Arecaceae |
| Watsonia borbonica | Watsonia | Iridaceae |
| Watsonia meriana var. bulbillifera | Bulbil watsonia | Iridaceae |
| Werauhia sanguinolenta | Sanguinolenta | Bromeliaceae |
| Westringia fruticosa | Coastal rosemary | Lamiaceae |
| Wikstroemia bicornuta | Akia | Thymelaeaceae |
| Wikstroemia monticola | Akia | Thymelaeaceae |
| Wikstroemia oahuensis | Akia | Thymelaeaceae |
| Wikstroemia oahuensis var. oahuensis | Akia kuahiwi | Thymelaeaceae |
| Wikstroemia sp. | Akia | Thymelaeaceae |
| Wikstroemia uva-ursi | Akia | Thymelaeaceae |
| Wikstroemia villosa | Akia | Thymelaeaceae |
| Wilkesia gymnoxiphium | Iliau | Asteraceae |
| Wisteria floribunda | Wisteria | Fabaceae |
| Wodyetia bifurcata | Foxtail palm | Arecaceae |
| Xanthium strumarium var. canadense | Cocklebur, kikania | Asteraceae |
| Xanthorrhoea preissii | Grasstree | Xanthorrhoeaceae |
| Xanthosoma brasilense | Tahitian taro | Araceae |
| Xanthosoma robustum | Ape, elephant ear | Araceae |
| Xanthosoma sagittifolium | Mickey mouse taro | Araceae |
| Xanthosoma sp. | Ape, elephant ear | Araceae |
| Xanthostemon chrysanthus | Golden penda | Myrtaceae |
| Ximenia americana | Hog plum, tallow wood | Olacaceae |
| Xylosma hawaiiense | Maua | Salicaceae |
| Youngia japonica | Oriental hawksbeard | Asteraceae |
| Yucca aloifolia | Spanish bayonet, dagger plant | Asparagaceae |
| Yucca baccata | Banana yucca | Asparagaceae |
| Yucca desmetiana | Yucca | Asparagaceae |
| Yucca elephantipes | Spineless yucca | Asparagaceae |
| Yucca filamentosa | Adam's needle, gold sword yucca | Asparagaceae |
| Yucca rostrata | Beaked yucca | Asparagaceae |
| Yucca sp. | Yucca | Asparagaceae |
| Zamia furfuracea | Cardboard zamia | Zamiaceae |
| Zamia integrifolia | Florida arrowroot | Zamiaceae |
| Zamia pumila | Coontie | Zamiaceae |
| Zamia sp. | Zamia | Zamiaceae |
| Zamioculcas zamiifolia | Zamioculcas, zz plant | Araceae |
| Zantedeschia aethiopica | Calla lily, arum lily | Araceae |
| Zantedeschia albomaculata | Spotted calla lily | Araceae |
| Zantedeschia sp. | Calla lily | Araceae |
| Zanthoxylum hawaiiense | Ae, zanthoxylum | Rutaceae |
| Zanthoxylum kauaense | Ae, zanthoxylum | Rutaceae |
| Zea mays | Corn | Poaceae |
| Zephyranthes candida | Rain lily, fairy lily | Amaryllidaceae |
| Zephyranthes citrina | Yellow rain lily | Amaryllidaceae |
| Zephyranthes sp. | Rain lily | Amaryllidaceae |
| Zeuxine strateumatica | Zeuxine | Orchidaceae |
| Zingiber malaysiana | Black ginger, midnight ginger | Zingiberaceae |
| Zingiber officinale | Ginger | Zingiberaceae |
| Zingiber spectabile | Golden beehive ginger, nodding gingerwort | Zingiberaceae |
| Zingiber zerumbet | Awapuhi, shampoo ginger | Zingiberaceae |
| Zinnia elegans | Zinnia | Asteraceae |
| Zinnia peruviana | Zinnia, pua pihi | Asteraceae |
| Zinnia sp. | Zinnia | Asteraceae |
| Zizania latifolia | Manchurian rice grass | Poaceae |
| Ziziphus mauritiana | Indian jujube | Rhamnaceae |
| Zornia reticulata | Zornia | Fabaceae |
| Zoysia sp. | Zoysia grass | Poaceae |
| Zygopetalum sp. | Zygopetalum | Orchidaceae |
