List of California Plants
| Plant Name | Scientific Name | Plant CD | Family | Type |
|---|---|---|---|---|
| Aaron"s beard | Hypericum calycinum | HYCA10 | Clusiaceae | Dicot |
| Abbot"s bushmallow | Malacothamnus abbottii | MAAB | Malvaceae | Dicot |
| Abert"s creeping zinnia | Sanvitalia abertii | SAAB | Asteraceae | Dicot |
| aboriginal saltbush | Atriplex vesicaria | ATVE | Chenopodiaceae | Dicot |
| Abrams" allium | Allium abramsii | ALAB2 | Liliaceae | Monocot |
| Abrams" liveforever | Dudleya abramsii | DUAB | Crassulaceae | Dicot |
| Abrams" liveforever | Dudleya abramsii ssp. abramsii | DUABA | Crassulaceae | Dicot |
| Abrams" lupine | Lupinus abramsii | LUAB | Fabaceae | Dicot |
| Abrams" oxytheca | Oxytheca parishii var. abramsii | OXPAA | Polygonaceae | Dicot |
| Abrams" sandmat | Chamaesyce abramsiana | CHAB2 | Euphorbiaceae | Dicot |
| Abrams" woollystar | Eriastrum abramsii | ERAB | Polemoniaceae | Dicot |
| abruptbeak sedge | Carex abrupta | CAAB2 | Cyperaceae | Monocot |
| acacia | Acacia | ACACI | Fabaceae | Dicot |
| acaena | Acaena | ACAEN | Rosaceae | Dicot |
| acanthus | Acanthus | ACANT7 | Acanthaceae | Dicot |
| achlys | Achlys | ACHLY | Berberidaceae | Dicot |
| achyronychia | Achyronychia | ACHYR3 | Caryophyllaceae | Dicot |
| acorn buckwheat | Eriogonum glandulosum | ERGL4 | Polygonaceae | Dicot |
| Acton"s brittlebush | Encelia actonii | ENAC | Asteraceae | Dicot |
| Adams" manzanita | Arctostaphylos glandulosa ssp. adamsii | ARGLA2 | Ericaceae | Dicot |
| adder"s-mouth orchid | Malaxis | MALAX | Orchidaceae | Monocot |
| adderstongue | Ophioglossum | OPHIO | Ophioglossaceae | Fern |
| adobe lily | Fritillaria pluriflora | FRPL | Liliaceae | Monocot |
| adobe navarretia | Navarretia nigelliformis | NANI | Polemoniaceae | Dicot |
| adobe navarretia | Navarretia nigelliformis ssp. nigelliformis | NANIN | Polemoniaceae | Dicot |
| adobe navarretia | Navarretia nigelliformis ssp. radians | NANIR | Polemoniaceae | Dicot |
| adobe popcornflower | Plagiobothrys acanthocarpus | PLAC | Boraginaceae | Dicot |
| adobe snakeroot | Sanicula maritima | SAMA3 | Apiaceae | Dicot |
| adobe yampah | Perideridia pringlei | PEPR5 | Apiaceae | Dicot |
| Adonis blazingstar | Mentzelia multiflora | MEMU3 | Loasaceae | Dicot |
| Adonis blazingstar | Mentzelia multiflora var. longiloba | MEMUL2 | Loasaceae | Dicot |
| Adonis blazingstar | Mentzelia multiflora var. multiflora | MEMUM2 | Loasaceae | Dicot |
| Aegean wallflower | Erysimum cheiri | ERCH10 | Brassicaceae | Dicot |
| aeonium | Aeonium | AEONI | Crassulaceae | Dicot |
| African asparagus fern | Asparagus asparagoides | ASAS4 | Liliaceae | Monocot |
| African boxthorn | Lycium ferocissimum | LYFE4 | Solanaceae | Dicot |
| African bristlegrass | Setaria sphacelata | SESP5 | Poaceae | Monocot |
| African cornflag | Chasmanthe | CHASM2 | Iridaceae | Monocot |
| African cornflag | Chasmanthe floribunda | CHFL9 | Iridaceae | Monocot |
| African cornlily | Ixia | IXIA | Iridaceae | Monocot |
| African daisy | Arctotis stoechadifolia | ARST2 | Asteraceae | Dicot |
| African dogstooth grass | Cynodon transvaalensis | CYTR | Poaceae | Monocot |
| African feathergrass | Pennisetum macrourum | PEMA80 | Poaceae | Monocot |
| African finger millet | Eleusine coracana ssp. africana | ELCOA | Poaceae | Monocot |
| African milkweed | Asclepias fruticosa | ASFR13 | Asclepiadaceae | Dicot |
| African mustard | Malcolmia africana | MAAF | Brassicaceae | Dicot |
| African olive | Olea europaea ssp. cuspidata | OLEUC | Oleaceae | Dicot |
| African plume | Bauhinia galpinii | BAGA | Fabaceae | Dicot |
| African senna | Senna didymobotrya | SEDI8 | Fabaceae | Dicot |
| African sumac | Rhus lancea | RHLA11 | Anacardiaceae | Dicot |
| African tamarisk | Tamarix africana | TAAF | Tamaricaceae | Dicot |
| African-lily | Agapanthus praecox | AGPR5 | Liliaceae | Monocot |
| African-queen | Anisodontea | ANISO6 | Malvaceae | Dicot |
| agapanthus | Agapanthus | AGAPA2 | Liliaceae | Monocot |
| Agardh lupine | Lupinus agardhianus | LUAG | Fabaceae | Dicot |
| agave | Agave | AGAVE | Agavaceae | Monocot |
| agoseris | Agoseris | AGOSE | Asteraceae | Dicot |
| agoseris | Agoseris ×dasycarpa | AGDA3 | Asteraceae | Dicot |
| agrimony | Agrimonia | AGRIM | Rosaceae | Dicot |
| agropogon | ×Agropogon | AGROP3 | Poaceae | Monocot |
| Ahart"s cluster rose | Rosa pisocarpa ssp. ahartii | ROPIA | Rosaceae | Dicot |
| Ahart"s dwarf rush | Juncus leiospermus var. ahartii | JULEA | Juncaceae | Monocot |
| Ahart"s nailwort | Paronychia ahartii | PAAH | Caryophyllaceae | Dicot |
| ailanthus | Ailanthus | AILAN | Simaroubaceae | Dicot |
| Alabama swamp flatsedge | Cyperus ligularis | CYLI | Cyperaceae | Monocot |
| Alameda County thistle | Cirsium quercetorum | CIQU2 | Asteraceae | Dicot |
| Alameda manzanita | Arctostaphylos pallida | ARPA21 | Ericaceae | Dicot |
| Alaska brome | Bromus sitchensis | BRSI | Poaceae | Monocot |
| Alaska cedar | Callitropsis nootkatensis | CANO9 | Cupressaceae | Gymnosperm |
| Alaska draba | Draba stenoloba | DRST2 | Brassicaceae | Dicot |
| Alaska draba | Draba stenoloba var. ramosa | DRSTR | Brassicaceae | Dicot |
| Alaska oniongrass | Melica subulata | MESU | Poaceae | Monocot |
| Alaska oniongrass | Melica subulata var. subulata | MESUS | Poaceae | Monocot |
| Albanian spurge | Euphorbia characias | EUCH13 | Euphorbiaceae | Dicot |
| albizia | Albizia | ALBIZ | Fabaceae | Dicot |
| alder | Alnus | ALNUS | Betulaceae | Dicot |
| alderleaf buckthorn | Rhamnus alnifolia | RHAL | Rhamnaceae | Dicot |
| alderleaf mountain mahogany | Cercocarpus montanus | CEMO2 | Rosaceae | Dicot |
| Alefeld"s pea | Lathyrus vestitus ssp. alefeldii | LAVEA | Fabaceae | Dicot |
| aleppo pine | Pinus halepensis | PIHA7 | Pinaceae | Gymnosperm |
| Aleutian maidenhair | Adiantum aleuticum | ADAL | Pteridaceae | Fern |
| Aleutian violet | Viola langsdorffii | VILA6 | Violaceae | Dicot |
| Alexander"s buckwheat | Eriogonum ochrocephalum var. alexandrae | EROCA | Polygonaceae | Dicot |
| alfalfa | Medicago | MEDIC | Fabaceae | Dicot |
| alfalfa | Medicago sativa | MESA | Fabaceae | Dicot |
| alfalfa | Medicago sativa ssp. sativa | MESAS | Fabaceae | Dicot |
| alfalfa dodder | Cuscuta approximata | CUAP2 | Cuscutaceae | Dicot |
| Algerian ivy | Hedera helix ssp. canariensis | HEHEC | Araliaceae | Dicot |
| Algerian sea lavender | Limonium ramosissimum | LIRA2 | Plumbaginaceae | Dicot |
| Algerian sea lavender | Limonium ramosissimum ssp. provinciale | LIRAP | Plumbaginaceae | Dicot |
| Algodones sunflower | Helianthus niveus ssp. tephrodes | HENIT | Asteraceae | Dicot |
| alhagi | Alhagi | ALHAG | Fabaceae | Dicot |
| Alice Eastwood"s fleabane | Erigeron aliceae | ERAL3 | Asteraceae | Dicot |
| aliciella | Aliciella | ALICI | Polemoniaceae | Dicot |
| alkali buttercup | Ranunculus cymbalaria | RACY | Ranunculaceae | Dicot |
| alkali centaury | Centaurium trichanthum | CETR2 | Gentianaceae | Dicot |
| alkali cordgrass | Spartina gracilis | SPGR | Poaceae | Monocot |
| alkali cusickiella | Cusickiella douglasii | CUDO3 | Brassicaceae | Dicot |
| alkali desertparsley | Lomatium caruifolium | LOCA5 | Apiaceae | Dicot |
| alkali desertparsley | Lomatium caruifolium var. caruifolium | LOCAC | Apiaceae | Dicot |
| alkali desertparsley | Lomatium caruifolium var. denticulatum | LOCAD | Apiaceae | Dicot |
| alkali goldenbush | Isocoma acradenia | ISAC2 | Asteraceae | Dicot |
| alkali goldenbush | Isocoma acradenia var. acradenia | ISACA2 | Asteraceae | Dicot |
| alkali goldenbush | Isocoma acradenia var. bracteosa | ISACB | Asteraceae | Dicot |
| alkali goldenbush | Isocoma acradenia var. eremophila | ISACE2 | Asteraceae | Dicot |
| alkali goldfields | Lasthenia platycarpha | LAPL2 | Asteraceae | Dicot |
| alkali mallow | Malvella leprosa | MALE3 | Malvaceae | Dicot |
| alkali mariposa lily | Calochortus striatus | CAST2 | Liliaceae | Monocot |
| alkali marsh aster | Almutaster | ALMUT2 | Asteraceae | Dicot |
| alkali marsh aster | Almutaster pauciflorus | ALPA14 | Asteraceae | Dicot |
| alkali milkvetch | Astragalus tener | ASTE6 | Fabaceae | Dicot |
| alkali milkvetch | Astragalus tener var. tener | ASTET2 | Fabaceae | Dicot |
| alkali pepperweed | Lepidium dictyotum | LEDI2 | Brassicaceae | Dicot |
| alkali pepperweed | Lepidium dictyotum var. dictyotum | LEDID | Brassicaceae | Dicot |
| alkali pepperwort | Lepidium dictyotum var. acutidens | LEDIA | Brassicaceae | Dicot |
| alkali phacelia | Phacelia neglecta | PHNE | Hydrophyllaceae | Dicot |
| alkali sacaton | Sporobolus airoides | SPAI | Poaceae | Monocot |
| alkali seaheath | Frankenia salina | FRSA | Frankeniaceae | Dicot |
| alkali swainsonpea | Sphaerophysa salsula | SPSA3 | Fabaceae | Dicot |
| alkali wildrye | Leymus simplex | LESI5 | Poaceae | Monocot |
| alkaligrass | Puccinellia | PUCCI | Poaceae | Monocot |
| alkalisink goldfields | Lasthenia chrysantha | LACH2 | Asteraceae | Dicot |
| alkaliweed | Cressa | CRESS | Convolvulaceae | Dicot |
| Allegheny blackberry | Rubus allegheniensis | RUAL | Rosaceae | Dicot |
| Allegheny blackberry | Rubus allegheniensis var. allegheniensis | RUALA | Rosaceae | Dicot |
| Allegheny monkeyflower | Mimulus ringens | MIRI | Scrophulariaceae | Dicot |
| Allegheny monkeyflower | Mimulus ringens var. ringens | MIRIR | Scrophulariaceae | Dicot |
| Allen Springs dwarf-flax | Hesperolinon clevelandii | HECL3 | Linaceae | Dicot |
| Allen"s pentachaeta | Pentachaeta aurea ssp. allenii | PEAUA | Asteraceae | Dicot |
| allenrolfea | Allenrolfea | ALLEN | Chenopodiaceae | Dicot |
| alligatorweed | Alternanthera philoxeroides | ALPH | Amaranthaceae | Dicot |
| allthorn | Koeberlinia | KOEBE | Capparaceae | Dicot |
| aloe | Aloe | ALOE | Aloaceae | Monocot |
| aloe | Aloe ×schoenlandi | ALSC12 | Aloaceae | Monocot |
| alpine alumroot | Heuchera cylindrica var. alpina | HECYA | Saxifragaceae | Dicot |
| alpine bedstraw | Galium hypotrichium | GAHY | Rubiaceae | Dicot |
| alpine bedstraw | Galium hypotrichium ssp. hypotrichium | GAHYH | Rubiaceae | Dicot |
| alpine bedstraw | Galium hypotrichium ssp. tomentellum | GAHYT | Rubiaceae | Dicot |
| alpine bentgrass | Agrostis humilis | AGHU | Poaceae | Monocot |
| alpine bittercress | Cardamine bellidifolia | CABE | Brassicaceae | Dicot |
| alpine bittercress | Cardamine bellidifolia var. pachyphylla | CABEP | Brassicaceae | Dicot |
| alpine dustymaiden | Chaenactis douglasii var. alpina | CHDOA2 | Asteraceae | Dicot |
| alpine false candytuft | Smelowskia ovalis | SMOV | Brassicaceae | Dicot |
| alpine false candytuft | Smelowskia ovalis var. congesta | SMOVC | Brassicaceae | Dicot |
| alpine fescue | Festuca brachyphylla | FEBR | Poaceae | Monocot |
| alpine gentian | Gentiana newberryi | GENE | Gentianaceae | Dicot |
| alpine gentian | Gentiana newberryi var. newberryi | GENEN | Gentianaceae | Dicot |
| alpine gooseberry | Ribes lasianthum | RILA2 | Grossulariaceae | Dicot |
| alpine groundsel | Packera pauciflora | PAPA19 | Asteraceae | Dicot |
| alpine jewelflower | Streptanthus gracilis | STGR3 | Brassicaceae | Dicot |
| alpine ladyfern | Athyrium americanum | ATAM | Dryopteridaceae | Fern |
| alpine lake false dandelion | Nothocalais alpestris | NOAL2 | Asteraceae | Dicot |
| alpine laurel | Kalmia microphylla | KAMI | Ericaceae | Dicot |
| alpine leafybract aster | Symphyotrichum foliaceum | SYFO2 | Asteraceae | Dicot |
| alpine leafybract aster | Symphyotrichum foliaceum var. apricum | SYFOA | Asteraceae | Dicot |
| alpine lewisia | Lewisia pygmaea | LEPY2 | Portulacaceae | Dicot |
| alpine meadow-rue | Thalictrum alpinum | THAL | Ranunculaceae | Dicot |
| alpine mountainsorrel | Oxyria digyna | OXDI3 | Polygonaceae | Dicot |
| alpine nerve sedge | Carex neurophora | CANE6 | Cyperaceae | Monocot |
| alpine pennycress | Noccaea fendleri ssp. glauca | NOFEG | Brassicaceae | Dicot |
| alpine pondweed | Potamogeton alpinus | POAL8 | Potamogetonaceae | Monocot |
| alpine sheep sorrel | Rumex paucifolius | RUPA6 | Polygonaceae | Dicot |
| alpine sheep sorrel | Rumex paucifolius ssp. gracilescens | RUPAG2 | Polygonaceae | Dicot |
| alpine sheep sorrel | Rumex paucifolius ssp. paucifolius | RUPAP | Polygonaceae | Dicot |
| alpine shootingstar | Dodecatheon alpinum | DOAL | Primulaceae | Dicot |
| alpine shootingstar | Dodecatheon alpinum ssp. alpinum | DOALA | Primulaceae | Dicot |
| alpine shootingstar | Dodecatheon alpinum ssp. majus | DOALM | Primulaceae | Dicot |
| alpine slender buckwheat | Eriogonum microthecum var. alpinum | ERMIA | Polygonaceae | Dicot |
| alpine spicywintergreen | Gaultheria humifusa | GAHU | Ericaceae | Dicot |
| alpine springbeauty | Claytonia megarhiza | CLME | Portulacaceae | Dicot |
| alpine springbeauty | Claytonia megarhiza var. bellidifolia | CLMEB | Portulacaceae | Dicot |
| alpine sulphur-flower buckwheat | Eriogonum umbellatum var. minus | ERUMM2 | Polygonaceae | Dicot |
| alpine timothy | Phleum alpinum | PHAL2 | Poaceae | Monocot |
| alpine waterleaf | Hydrophyllum capitatum var. alpinum | HYCAA | Hydrophyllaceae | Dicot |
| alpine willow | Salix petrophila | SAPE18 | Salicaceae | Dicot |
| alpineflames | Pyrrocoma apargioides | PYAP2 | Asteraceae | Dicot |
| alpinegold | Hulsea | HULSE | Asteraceae | Dicot |
| alsike clover | Trifolium hybridum | TRHY | Fabaceae | Dicot |
| alumroot | Heuchera | HEUCH | Saxifragaceae | Dicot |
| Alva Day"s gilia | Navarretia sinistra ssp. pinnatisecta | NASIP | Polemoniaceae | Dicot |
| Alva Day"s gilia | Navarretia sinistra ssp. sinistra | NASIS | Polemoniaceae | Dicot |
| Alva Day"s pincushionplant | Navarretia sinistra | NASI2 | Polemoniaceae | Dicot |
| Alvord oak | Quercus ×alvordiana | QUAL2 | Fagaceae | Dicot |
| alyssum | Alyssum simplex | ALSI8 | Brassicaceae | Dicot |
| alyssum | Alyssum strigosum | ALST2 | Brassicaceae | Dicot |
| alyssum evening primrose | Camissonia boothii ssp. alyssoides | CABOA | Onagraceae | Dicot |
| Amador County vervain | Verbena ×clemensiorum | VECL2 | Verbenaceae | Dicot |
| Amargosa niterwort | Nitrophila mohavensis | NIMO | Chenopodiaceae | Dicot |
| amaryllis | Amaryllis | AMARY | Liliaceae | Monocot |
| amberboa | Amberboa | AMBER | Asteraceae | Dicot |
| amblyopappus | Amblyopappus | AMBLY2 | Asteraceae | Dicot |
| ambrosia leaf bur ragweed | Ambrosia ambrosioides | AMAM2 | Asteraceae | Dicot |
| American alpine speedwell | Veronica wormskjoldii | VEWO2 | Scrophulariaceae | Dicot |
| American alpine speedwell | Veronica wormskjoldii var. wormskjoldii | VEWOW | Scrophulariaceae | Dicot |
| American beachgrass | Ammophila breviligulata | AMBR | Poaceae | Monocot |
| American bird"s-foot trefoil | Lotus unifoliolatus | LOUN | Fabaceae | Dicot |
| American bird"s-foot trefoil | Lotus unifoliolatus var. unifoliolatus | LOUNU | Fabaceae | Dicot |
| American bistort | Polygonum bistortoides | POBI6 | Polygonaceae | Dicot |
| American black elderberry | Sambucus nigra ssp. canadensis | SANIC4 | Caprifoliaceae | Dicot |
| American black nightshade | Solanum americanum | SOAM | Solanaceae | Dicot |
| American bugseed | Corispermum americanum | COAM8 | Chenopodiaceae | Dicot |
| American bugseed | Corispermum americanum var. americanum | COAMA2 | Chenopodiaceae | Dicot |
| American burnweed | Erechtites hieraciifolia | ERHI2 | Asteraceae | Dicot |
| American burnweed | Erechtites hieraciifolia var. hieraciifolia | ERHIH | Asteraceae | Dicot |
| American century plant | Agave americana | AGAM | Agavaceae | Monocot |
| American century plant | Agave americana ssp. americana | AGAMA | Agavaceae | Monocot |
| American century plant | Agave americana ssp. americana var. expansa | AGAME | Agavaceae | Monocot |
| American common reed | Phragmites australis ssp. americanus | PHAUA6 | Poaceae | Monocot |
| American dunegrass | Leymus mollis | LEMO8 | Poaceae | Monocot |
| American dunegrass | Leymus mollis ssp. mollis | LEMOM2 | Poaceae | Monocot |
| American dwarf mistletoe | Arceuthobium americanum | ARAM | Viscaceae | Dicot |
| American eelgrass | Vallisneria americana | VAAM3 | Hydrocharitaceae | Monocot |
| American licorice | Glycyrrhiza lepidota | GLLE3 | Fabaceae | Dicot |
| American lopseed | Phryma leptostachya | PHLE5 | Verbenaceae | Dicot |
| American lotus | Nelumbo lutea | NELU | Nelumbonaceae | Dicot |
| American mannagrass | Glyceria grandis | GLGR | Poaceae | Monocot |
| American mannagrass | Glyceria grandis var. grandis | GLGRG | Poaceae | Monocot |
| American pillwort | Pilularia americana | PIAM | Marsileaceae | Fern |
| American pokeweed | Phytolacca americana | PHAM4 | Phytolaccaceae | Dicot |
| American pokeweed | Phytolacca americana var. americana | PHAMA3 | Phytolaccaceae | Dicot |
| American red raspberry | Rubus idaeus | RUID | Rosaceae | Dicot |
| American rockbrake | Cryptogramma acrostichoides | CRAC3 | Pteridaceae | Fern |
| American saw-wort | Saussurea americana | SAAM3 | Asteraceae | Dicot |
| American searocket | Cakile edentula | CAED | Brassicaceae | Dicot |
| American searocket | Cakile edentula ssp. edentula | CAEDE | Brassicaceae | Dicot |
| American searocket | Cakile edentula ssp. edentula var. edentula | CAEDE2 | Brassicaceae | Dicot |
| American silvertop | Glehnia littoralis | GLLI | Apiaceae | Dicot |
| American silvertop | Glehnia littoralis ssp. leiocarpa | GLLIL | Apiaceae | Dicot |
| American skunkcabbage | Lysichiton americanus | LYAM3 | Araceae | Monocot |
| American sloughgrass | Beckmannia syzigachne | BESY | Poaceae | Monocot |
| American speedwell | Veronica americana | VEAM2 | Scrophulariaceae | Dicot |
| American threefold | Trixis californica | TRCA8 | Asteraceae | Dicot |
| American trailplant | Adenocaulon bicolor | ADBI | Asteraceae | Dicot |
| American vetch | Vicia americana | VIAM | Fabaceae | Dicot |
| American vetch | Vicia americana ssp. americana | VIAMA3 | Fabaceae | Dicot |
| American water horehound | Lycopus americanus | LYAM | Lamiaceae | Dicot |
| American water plantain | Alisma subcordatum | ALSU | Alismataceae | Monocot |
| American waterawlwort | Subularia aquatica var. americana | SUAQA2 | Brassicaceae | Dicot |
| American white waterlily | Nymphaea odorata | NYOD | Nymphaeaceae | Dicot |
| American white waterlily | Nymphaea odorata ssp. odorata | NYODO | Nymphaeaceae | Dicot |
| American wild carrot | Daucus pusillus | DAPU3 | Apiaceae | Dicot |
| American woollyfruit sedge | Carex lasiocarpa var. americana | CALAA | Cyperaceae | Monocot |
| American yellowrocket | Barbarea orthoceras | BAOR | Brassicaceae | Dicot |
| Ames" milkvetch | Astragalus pulsiferae | ASPU7 | Fabaceae | Dicot |
| Ames" milkvetch | Astragalus pulsiferae var. pulsiferae | ASPUP5 | Fabaceae | Dicot |
| amethyst stickseed | Hackelia amethystina | HAAM | Boraginaceae | Dicot |
| ammi | Ammi | AMMI4 | Apiaceae | Dicot |
| analogue sedge | Carex simulata | CASI2 | Cyperaceae | Monocot |
| Andean watermilfoil | Myriophyllum quitense | MYQU | Haloragaceae | Dicot |
| Anderson"s buttercup | Ranunculus andersonii | RAAN | Ranunculaceae | Dicot |
| Anderson"s buttercup | Ranunculus andersonii var. andersonii | RAANA | Ranunculaceae | Dicot |
| Anderson"s hawksbeard | Crepis runcinata ssp. andersonii | CRRUA | Asteraceae | Dicot |
| Anderson"s larkspur | Delphinium andersonii | DEAN | Ranunculaceae | Dicot |
| Anderson"s lupine | Lupinus andersonii | LUAN2 | Fabaceae | Dicot |
| Anderson"s milkvetch | Astragalus andersonii | ASAN2 | Fabaceae | Dicot |
| Andrew"s clintonia | Clintonia andrewsiana | CLAN2 | Liliaceae | Monocot |
| Andrews" bedstraw | Galium andrewsii ssp. andrewsii | GAANA | Rubiaceae | Dicot |
| Andrews" clover | Trifolium barbigerum var. andrewsii | TRBAA | Fabaceae | Dicot |
| anelsonia | Anelsonia | ANELS | Brassicaceae | Dicot |
| anemone | Anemone | ANEMO | Ranunculaceae | Dicot |
| angel"s trumpets | Acleisanthes longiflora | ACLO2 | Nyctaginaceae | Dicot |
| angelica | Angelica | ANGEL | Apiaceae | Dicot |
| angled pea | Lathyrus angulatus | LAAN3 | Fabaceae | Dicot |
| angleleaf miterwort | Mitella diversifolia | MIDI4 | Saxifragaceae | Dicot |
| anglestem buckwheat | Eriogonum angulosum | ERAN3 | Polygonaceae | Dicot |
| animated oat | Avena sterilis | AVST | Poaceae | Monocot |
| anisocoma | Anisocoma | ANISO3 | Asteraceae | Dicot |
| annual agoseris | Agoseris heterophylla | AGHE2 | Asteraceae | Dicot |
| annual agoseris | Agoseris heterophylla var. crenulata | AGHEC | Asteraceae | Dicot |
| annual agoseris | Agoseris heterophylla var. heterophylla | AGHEH | Asteraceae | Dicot |
| annual agoseris | Agoseris heterophylla var. turgida | AGHET | Asteraceae | Dicot |
| annual bastardcabbage | Rapistrum rugosum | RARU | Brassicaceae | Dicot |
| annual bluegrass | Poa annua | POAN | Poaceae | Monocot |
| annual canarygrass | Phalaris canariensis | PHCA5 | Poaceae | Monocot |
| annual checkerbloom | Sidalcea calycosa | SICA | Malvaceae | Dicot |
| annual checkerbloom | Sidalcea calycosa ssp. calycosa | SICAC3 | Malvaceae | Dicot |
| annual desert milkvetch | Astragalus aridus | ASAR5 | Fabaceae | Dicot |
| annual fescue | Vulpia myuros | VUMY | Poaceae | Monocot |
| annual hairgrass | Deschampsia danthonioides | DEDA | Poaceae | Monocot |
| annual honesty | Lunaria annua | LUAN | Brassicaceae | Dicot |
| annual mallow | Lavatera trimestris | LATR3 | Malvaceae | Dicot |
| annual mercury | Mercurialis annua | MEAN | Euphorbiaceae | Dicot |
| annual muhly | Muhlenbergia minutissima | MUMI2 | Poaceae | Monocot |
| annual pearlwort | Sagina apetala | SAAP | Caryophyllaceae | Dicot |
| annual polemonium | Polemonium micranthum | POMI | Polemoniaceae | Dicot |
| annual psathyrotes | Psathyrotes annua | PSAN | Asteraceae | Dicot |
| annual rabbitsfoot grass | Polypogon monspeliensis | POMO5 | Poaceae | Monocot |
| annual ragweed | Ambrosia artemisiifolia | AMAR2 | Asteraceae | Dicot |
| annual ragweed | Ambrosia artemisiifolia var. elatior | AMARE | Asteraceae | Dicot |
| annual redspot monkeyflower | Mimulus parryi | MIPA4 | Scrophulariaceae | Dicot |
| annual sandwort | Minuartia pusilla | MIPU7 | Caryophyllaceae | Dicot |
| annual sandwort | Minuartia pusilla var. diffusa | MIPUD | Caryophyllaceae | Dicot |
| annual sandwort | Minuartia pusilla var. pusilla | MIPUP | Caryophyllaceae | Dicot |
| annual semaphoregrass | Pleuropogon californicus | PLCA6 | Poaceae | Monocot |
| annual semaphoregrass | Pleuropogon californicus var. californicus | PLCAC7 | Poaceae | Monocot |
| annual semaphoregrass | Pleuropogon californicus var. davyi | PLCAD | Poaceae | Monocot |
| annual silver hairgrass | Aira elegans | AIEL4 | Poaceae | Monocot |
| annual toothleaf | Stillingia spinulosa | STSP | Euphorbiaceae | Dicot |
| annual vernalgrass | Anthoxanthum aristatum | ANAR7 | Poaceae | Monocot |
| annual wallrocket | Diplotaxis muralis | DIMU2 | Brassicaceae | Dicot |
| annual water minerslettuce | Montia fontana | MOFO | Portulacaceae | Dicot |
| annual yellow sweetclover | Melilotus indicus | MEIN2 | Fabaceae | Dicot |
| anoda | Anoda | ANODA | Malvaceae | Dicot |
| antelope bitterbrush | Purshia tridentata | PUTR2 | Rosaceae | Dicot |
| Antelope Valley beardtongue | Penstemon janishiae | PEJA2 | Scrophulariaceae | Dicot |
| Anthony Peak lupine | Lupinus antoninus | LUAN5 | Fabaceae | Dicot |
| Antioch Dunes evening primrose | Oenothera deltoides ssp. howellii | OEDEH | Onagraceae | Dicot |
| antlerfern | Ceratopteris | CERAT2 | Parkeriaceae | Fern |
| Apache plume | Fallugia | FALLU | Rosaceae | Dicot |
| Apache plume | Fallugia paradoxa | FAPA | Rosaceae | Dicot |
| aparejograss | Muhlenbergia utilis | MUUT | Poaceae | Monocot |
| apiastrum | Apiastrum | APIAS | Apiaceae | Dicot |
| aponogeton | Aponogeton | APONO | Aponogetonaceae | Monocot |
| appendage brodiaea | Brodiaea appendiculata | BRAP | Liliaceae | Monocot |
| apple | Malus | MALUS | Rosaceae | Dicot |
| apple mint | Mentha suaveolens | MESU5 | Lamiaceae | Dicot |
| apple of Peru | Nicandra physalodes | NIPH | Solanaceae | Dicot |
| apricot | Prunus armeniaca | PRAR3 | Rosaceae | Dicot |
| apricot globemallow | Sphaeralcea ambigua ssp. ambigua | SPAMA | Malvaceae | Dicot |
| aptenia | Aptenia | APTEN | Aizoaceae | Dicot |
| Arabian pea | Bituminaria bituminosa | BIBI4 | Fabaceae | Dicot |
| Arabian schismus | Schismus arabicus | SCAR | Poaceae | Monocot |
| araujia | Araujia | ARAUJ | Asclepiadaceae | Dicot |
| arborvitae | Thuja | THUJA | Cupressaceae | Gymnosperm |
| Arburua Ranch jewelflower | Streptanthus insignis ssp. lyonii | STINL | Brassicaceae | Dicot |
| arcane milkvetch | Astragalus obscurus | ASOB4 | Fabaceae | Dicot |
| arching sedge | Carex cyrtostachya | CACY2 | Cyperaceae | Monocot |
| arctic pearlwort | Sagina saginoides | SASA | Caryophyllaceae | Dicot |
| arctic rush | Juncus arcticus | JUAR2 | Juncaceae | Monocot |
| arctic starflower | Trientalis europaea | TREU | Primulaceae | Dicot |
| arctic starflower | Trientalis europaea ssp. arctica | TREUA | Primulaceae | Dicot |
| arctic sweet coltsfoot | Petasites frigidus | PEFR5 | Asteraceae | Dicot |
| arctic sweet coltsfoot | Petasites frigidus var. palmatus | PEFRP | Asteraceae | Dicot |
| arctotis | Arctotis | ARCTO4 | Asteraceae | Dicot |
| Argentine screwbean | Prosopis strombulifera | PRST3 | Fabaceae | Dicot |
| Argentinian biddy-biddy | Acaena pinnatifida | ACPI3 | Rosaceae | Dicot |
| Argentinian biddy-biddy | Acaena pinnatifida var. californica | ACPIC2 | Rosaceae | Dicot |
| Argus bedstraw | Galium argense | GAAR3 | Rubiaceae | Dicot |
| Argus blazingstar | Mentzelia oreophila | MEOR3 | Loasaceae | Dicot |
| arid tansyaster | Machaeranthera arida | MAAR5 | Asteraceae | Dicot |
| aridland goosefoot | Chenopodium desiccatum | CHDE | Chenopodiaceae | Dicot |
| Arizona barley | Hordeum arizonicum | HOAR | Poaceae | Monocot |
| Arizona brome | Bromus arizonicus | BRAR4 | Poaceae | Monocot |
| Arizona centaury | Centaurium arizonicum | CEAR12 | Gentianaceae | Dicot |
| Arizona cottonrose | Logfia arizonica | LOAR12 | Asteraceae | Dicot |
| Arizona cottontop | Digitaria californica | DICA8 | Poaceae | Monocot |
| Arizona cypress | Hesperocyparis arizonica | HEAR22 | Cupressaceae | Gymnosperm |
| Arizona fiestaflower | Pholistoma auritum var. arizonicum | PHAUA | Hydrophyllaceae | Dicot |
| Arizona four-nerve daisy | Tetraneuris acaulis var. arizonica | TEACA | Asteraceae | Dicot |
| Arizona honeysweet | Tidestromia oblongifolia | TIOB | Amaranthaceae | Dicot |
| Arizona ipomopsis | Ipomopsis arizonica | IPAR2 | Polemoniaceae | Dicot |
| Arizona lupine | Lupinus arizonicus | LUAR4 | Fabaceae | Dicot |
| Arizona lupine | Lupinus arizonicus ssp. arizonicus | LUARA7 | Fabaceae | Dicot |
| Arizona lupine | Lupinus arizonicus ssp. arizonicus var. barbatulus | LUARB2 | Fabaceae | Dicot |
| Arizona lupine | Lupinus arizonicus ssp. setosissimus | LUARS4 | Fabaceae | Dicot |
| Arizona mousetail | Myosurus cupulatus | MYCU | Ranunculaceae | Dicot |
| Arizona popcornflower | Plagiobothrys arizonicus | PLAR | Boraginaceae | Dicot |
| Arizona poppy | Kallstroemia grandiflora | KAGR | Zygophyllaceae | Dicot |
| Arizona sandmat | Chamaesyce arizonica | CHAR18 | Euphorbiaceae | Dicot |
| Arizona signalgrass | Urochloa arizonica | URAR | Poaceae | Monocot |
| Arizona thistle | Cirsium arizonicum | CIAR3 | Asteraceae | Dicot |
| Arizona wheatgrass | Elymus arizonicus | ELAR7 | Poaceae | Monocot |
| Arizona whitefeather | Ivesia arizonica var. arizonica | IVARA | Rosaceae | Dicot |
| Arizona wrightwort | Carlowrightia arizonica | CAAR7 | Acanthaceae | Dicot |
| armeria | Armeria | ARMER | Plumbaginaceae | Dicot |
| armoracia | Armoracia | ARMOR | Brassicaceae | Dicot |
| arnica | Arnica | ARNIC | Asteraceae | Dicot |
| aroeira blanca | Lithrea molleoides | LIMO4 | Anacardiaceae | Dicot |
| arrow arum | Peltandra | PELTA | Araceae | Monocot |
| arrow bamboo | Pseudosasa | PSEUD9 | Poaceae | Monocot |
| arrow bamboo | Pseudosasa japonica | PSJA | Poaceae | Monocot |
| arrowgrass | Triglochin | TRIGL | Juncaginaceae | Monocot |
| arrowhead | Sagittaria | SAGIT | Alismataceae | Monocot |
| arrowleaf balsamroot | Balsamorhiza sagittata | BASA3 | Asteraceae | Dicot |
| arrowleaf buckwheat | Eriogonum compositum | ERCO12 | Polygonaceae | Dicot |
| arrowleaf buckwheat | Eriogonum compositum var. compositum | ERCOC8 | Polygonaceae | Dicot |
| arrowleaf clover | Trifolium vesiculosum | TRVE | Fabaceae | Dicot |
| arrowleaf ragwort | Senecio triangularis | SETR | Asteraceae | Dicot |
| arrowweed | Pluchea sericea | PLSE | Asteraceae | Dicot |
| Arroyo de la Cruz mariposa lily | Calochortus clavatus var. recurvifolius | CACLR3 | Liliaceae | Monocot |
| arroyo willow | Salix lasiolepis | SALA6 | Salicaceae | Dicot |
| arroyo willow | Salix lasiolepis var. lasiolepis | SALAL2 | Salicaceae | Dicot |
| arthrocnemum | Arthrocnemum | ARTHR4 | Chenopodiaceae | Dicot |
| artist"s popcornflower | Plagiobothrys chorisianus | PLCH | Boraginaceae | Dicot |
| artist"s popcornflower | Plagiobothrys chorisianus var. chorisianus | PLCHC | Boraginaceae | Dicot |
| artist"s popcornflower | Plagiobothrys undulatus | PLUN2 | Boraginaceae | Dicot |
| arum | Arum | ARUM2 | Araceae | Monocot |
| arumleaf arrowhead | Sagittaria cuneata | SACU | Alismataceae | Monocot |
| aruncus | Aruncus | ARUNC | Rosaceae | Dicot |
| ash | Fraxinus | FRAXI | Oleaceae | Dicot |
| Ash Creek mousetail | Ivesia paniculata | IVPA | Rosaceae | Dicot |
| Ash Meadows gumweed | Grindelia fraxinopratensis | GRFR | Asteraceae | Dicot |
| ash penstemon | Penstemon cinicola | PECI2 | Scrophulariaceae | Dicot |
| ashen milkvetch | Astragalus tephrodes | ASTE8 | Fabaceae | Dicot |
| ashen milkvetch | Astragalus tephrodes var. brachylobus | ASTEB | Fabaceae | Dicot |
| ashen milkvetch | Astragalus tephrodes var. remulcus | ASTER2 | Fabaceae | Dicot |
| ashgray Indian paintbrush | Castilleja cinerea | CACI6 | Scrophulariaceae | Dicot |
| Ashland cinquefoil | Potentilla glandulosa ssp. ashlandica | POGLA2 | Rosaceae | Dicot |
| Ashland thistle | Cirsium ciliolatum | CICI | Asteraceae | Dicot |
| ashy pipewort | Eriocaulon cinereum | ERCI4 | Eriocaulaceae | Monocot |
| ashy silktassel | Garrya flavescens | GAFL2 | Garryaceae | Dicot |
| Asian mustard | Brassica tournefortii | BRTO | Brassicaceae | Dicot |
| Asian pigeonwings | Clitoria ternatea | CLTE3 | Fabaceae | Dicot |
| Asian ponysfoot | Dichondra micrantha | DIMI | Convolvulaceae | Dicot |
| Asian watermeal | Wolffia globosa | WOGL3 | Lemnaceae | Monocot |
| Asian waterwort | Elatine ambigua | ELAM | Elatinaceae | Dicot |
| asparagus | Asparagus | ASPAR | Liliaceae | Monocot |
| asphodel | Narthecium | NARTH | Liliaceae | Monocot |
| asphodelus | Asphodelus | ASPHO | Liliaceae | Monocot |
| aster | Eucephalus | EUCEP2 | Asteraceae | Dicot |
| aster | Oreostemma | OREOS | Asteraceae | Dicot |
| aster | Eurybia | EURYB | Asteraceae | Dicot |
| aster | Ionactis | IONAC | Asteraceae | Dicot |
| aster | Symphyotrichum | SYMPH4 | Asteraceae | Dicot |
| asthmaweed | Conyza bonariensis | COBO | Asteraceae | Dicot |
| asthmaweed | Conyza floribunda | COFL | Asteraceae | Dicot |
| Athel tamarisk | Tamarix aphylla | TAAP | Tamaricaceae | Dicot |
| Atkinson"s tickseed | Coreopsis tinctoria var. atkinsoniana | COTIA | Asteraceae | Dicot |
| atrichoseris | Atrichoseris | ATRIC | Asteraceae | Dicot |
| attenuate Indian paintbrush | Castilleja attenuata | CAAT25 | Scrophulariaceae | Dicot |
| Austin desertparsley | Lomatium austiniae | LOAU5 | Apiaceae | Dicot |
| Austin knotweed | Polygonum douglasii ssp. austiniae | PODOA2 | Polygonaceae | Dicot |
| Austin"s beardtongue | Penstemon floridus var. austinii | PEFLA2 | Scrophulariaceae | Dicot |
| Austin"s milkvetch | Astragalus austiniae | ASAU | Fabaceae | Dicot |
| Austin"s popcornflower | Plagiobothrys austiniae | PLAU | Boraginaceae | Dicot |
| Australasian geranium | Geranium homeanum | GEHO5 | Geraniaceae | Dicot |
| Australian brake | Pteris tremula | PTTR3 | Pteridaceae | Fern |
| Australian brome | Bromus arenarius | BRAR3 | Poaceae | Monocot |
| Australian cheesewood | Pittosporum undulatum | PIUN2 | Pittosporaceae | Dicot |
| Australian fingergrass | Chloris truncata | CHTR | Poaceae | Monocot |
| Australian saltbush | Atriplex semibaccata | ATSE | Chenopodiaceae | Dicot |
| Australian stork"s bill | Erodium cygnorum | ERCY2 | Geraniaceae | Dicot |
| Australian sundew | Drosera aliciae | DRAL6 | Droseraceae | Dicot |
| Australian teatree | Leptospermum laevigatum | LELA29 | Myrtaceae | Dicot |
| Australian wallaby grass | Amphibromus neesii | AMNE4 | Poaceae | Monocot |
| Australian waterbuttons | Cotula australis | COAU3 | Asteraceae | Dicot |
| Austrian yellowcress | Rorippa austriaca | ROAU | Brassicaceae | Dicot |
| autumn dwarf gentian | Gentianella amarella | GEAM3 | Gentianaceae | Dicot |
| autumn dwarf gentian | Gentianella amarella ssp. acuta | GEAMA | Gentianaceae | Dicot |
| Aven Nelson"s phacelia | Phacelia anelsonii | PHAN | Hydrophyllaceae | Dicot |
| avens | Geum | GEUM | Rosaceae | Dicot |
| awl-leaf lilaea | Lilaea scilloides | LISC4 | Juncaginaceae | Monocot |
| awl-leaf pincushionplant | Navarretia subuligera | NASU | Polemoniaceae | Dicot |
| awlfruit sedge | Carex stipata | CAST5 | Cyperaceae | Monocot |
| awlwort | Subularia | SUBUL | Brassicaceae | Dicot |
| awned halfchaff sedge | Lipocarpha aristulata | LIAR6 | Cyperaceae | Monocot |
| awnless spiralgrass | Tuctoria greenei | TUGR | Poaceae | Monocot |
| ayenia | Ayenia | AYENI | Sterculiaceae | Dicot |
| Azores buttercup | Ranunculus cortusifolius | RACO21 | Ranunculaceae | Dicot |
| Azores forget-me-not | Myosotis azorica | MYAZ | Boraginaceae | Dicot |
| Aztec marigold | Tagetes erecta | TAER | Asteraceae | Dicot |
| azure penstemon | Penstemon azureus | PEAZ | Scrophulariaceae | Dicot |
| azure penstemon | Penstemon azureus ssp. angustissimus | PEAZA | Scrophulariaceae | Dicot |
| azure penstemon | Penstemon azureus ssp. azureus | PEAZA2 | Scrophulariaceae | Dicot |
| baby blue eyes | Nemophila menziesii | NEME | Hydrophyllaceae | Dicot |
| baby blue eyes | Nemophila menziesii var. atomaria | NEMEA | Hydrophyllaceae | Dicot |
| baby blue eyes | Nemophila menziesii var. integrifolia | NEMEI | Hydrophyllaceae | Dicot |
| baby blue eyes | Nemophila menziesii var. menziesii | NEMEM | Hydrophyllaceae | Dicot |
| baby blue eyes | Nemophila | NEMOP | Hydrophyllaceae | Dicot |
| baby sage | Salvia microphylla | SAMI20 | Lamiaceae | Dicot |
| baby"s breath | Gypsophila paniculata | GYPA | Caryophyllaceae | Dicot |
| baby"s-breath | Gypsophila | GYPSO | Caryophyllaceae | Dicot |
| baccharis | Baccharis | BACCH | Asteraceae | Dicot |
| Bach"s calicoflower | Downingia bacigalupii | DOBA | Campanulaceae | Dicot |
| bahia | Bahia | BAHIA | Asteraceae | Dicot |
| bahiagrass | Paspalum notatum | PANO2 | Poaceae | Monocot |
| bahiagrass | Paspalum notatum var. saurae | PANOS | Poaceae | Monocot |
| Bailey"s buckwheat | Eriogonum baileyi | ERBA7 | Polygonaceae | Dicot |
| Bailey"s buckwheat | Eriogonum baileyi var. baileyi | ERBAB | Polygonaceae | Dicot |
| Bailey"s buckwheat | Eriogonum baileyi var. praebens | ERBAP | Polygonaceae | Dicot |
| Bailey"s ivesia | Ivesia baileyi | IVBA | Rosaceae | Dicot |
| Bailey"s ivesia | Ivesia baileyi var. baileyi | IVBAB | Rosaceae | Dicot |
| Bailey"s ivesia | Ivesia baileyi var. beneolens | IVBAB2 | Rosaceae | Dicot |
| Baja birdbush | Ornithostaphylos oppositifolia | OROP | Ericaceae | Dicot |
| Baja buckwheat | Eriogonum foliosum | ERFO4 | Polygonaceae | Dicot |
| Baja California ipomopsis | Ipomopsis effusa | IPEF | Polemoniaceae | Dicot |
| Baja desert-thorn | Lycium brevipes | LYBR | Solanaceae | Dicot |
| Baja pincushionplant | Navarretia peninsularis | NAPE | Polemoniaceae | Dicot |
| Baja rose | Rosa minutifolia | ROMI80 | Rosaceae | Dicot |
| bajada lupine | Lupinus concinnus | LUCO | Fabaceae | Dicot |
| bajada lupine | Lupinus concinnus ssp. concinnus | LUCOC | Fabaceae | Dicot |
| bajada lupine | Lupinus concinnus ssp. optatus | LUCOO | Fabaceae | Dicot |
| Baker"s delphinium | Delphinium bakeri | DEBA | Ranunculaceae | Dicot |
| Baker"s goldfields | Lasthenia californica ssp. bakeri | LACAB | Asteraceae | Dicot |
| Baker"s hawksbeard | Crepis bakeri | CRBA2 | Asteraceae | Dicot |
| Baker"s hawksbeard | Crepis bakeri ssp. bakeri | CRBAB | Asteraceae | Dicot |
| Baker"s manzanita | Arctostaphylos bakeri | ARBA4 | Ericaceae | Dicot |
| Baker"s manzanita | Arctostaphylos bakeri ssp. bakeri | ARBAB | Ericaceae | Dicot |
| Baker"s meadowfoam | Limnanthes bakeri | LIBA2 | Limnanthaceae | Dicot |
| Baker"s navarretia | Navarretia leucocephala ssp. bakeri | NALEB | Polemoniaceae | Dicot |
| Baker"s stickyseed | Blennosperma bakeri | BLBA | Asteraceae | Dicot |
| Baker"s violet | Viola bakeri | VIBA2 | Violaceae | Dicot |
| Baker"s wild hollyhock | Iliamna bakeri | ILBA | Malvaceae | Dicot |
| bald brome | Bromus racemosus | BRRA2 | Poaceae | Monocot |
| bald fleabane | Erigeron calvus | ERCA3 | Asteraceae | Dicot |
| Bald Mountain milkvetch | Astragalus umbraticus | ASUM3 | Fabaceae | Dicot |
| Baldwin Lake linanthus | Linanthus killipii | LIKI | Polemoniaceae | Dicot |
| Balfour"s touch-me-not | Impatiens balfourii | IMBA2 | Balsaminaceae | Dicot |
| ball saltbush | Atriplex fruticulosa | ATFR | Chenopodiaceae | Dicot |
| ballhead ipomopsis | Ipomopsis congesta | IPCO5 | Polemoniaceae | Dicot |
| ballhead ipomopsis | Ipomopsis congesta ssp. congesta | IPCOC3 | Polemoniaceae | Dicot |
| ballhead ipomopsis | Ipomopsis congesta ssp. montana | IPCOM | Polemoniaceae | Dicot |
| ballhead ipomopsis | Ipomopsis congesta ssp. palmifrons | IPCOP | Polemoniaceae | Dicot |
| ballhead sandwort | Arenaria congesta | ARCO5 | Caryophyllaceae | Dicot |
| ballhead sandwort | Arenaria congesta var. congesta | ARCOC4 | Caryophyllaceae | Dicot |
| ballhead sandwort | Arenaria congesta var. crassula | ARCOC3 | Caryophyllaceae | Dicot |
| ballhead sandwort | Arenaria congesta var. simulans | ARCOS | Caryophyllaceae | Dicot |
| ballhead waterleaf | Hydrophyllum capitatum | HYCA4 | Hydrophyllaceae | Dicot |
| ballona cinquefoil | Potentilla multijuga | POMU5 | Rosaceae | Dicot |
| balloon sack clover | Trifolium depauperatum var. diversifolium | TRDED2 | Fabaceae | Dicot |
| balloon sack clover | Trifolium depauperatum var. stenophyllum | TRDES | Fabaceae | Dicot |
| balloon sack clover | Trifolium depauperatum var. amplectens | TRDEA | Fabaceae | Dicot |
| balloonpod milkvetch | Astragalus whitneyi | ASWH | Fabaceae | Dicot |
| balloonpod milkvetch | Astragalus whitneyi var. whitneyi | ASWHW | Fabaceae | Dicot |
| balloonpod milkvetch | Astragalus whitneyi var. lenophyllus | ASWHL | Fabaceae | Dicot |
| balm | Melissa | MELIS | Lamiaceae | Dicot |
| balsam bird"s-foot trefoil | Lotus stipularis | LOST3 | Fabaceae | Dicot |
| balsam bird"s-foot trefoil | Lotus stipularis var. stipularis | LOSTS | Fabaceae | Dicot |
| balsam poplar | Populus balsamifera | POBA2 | Salicaceae | Dicot |
| balsamroot | Balsamorhiza | BALSA | Asteraceae | Dicot |
| balsamroot | Balsamorhiza ×terebinthacea | BATE3 | Asteraceae | Dicot |
| bamboo | Phyllostachys | PHYLL6 | Poaceae | Monocot |
| banana passionflower | Passiflora tarminiana | PATA6 | Passifloraceae | Dicot |
| banana yucca | Yucca baccata | YUBA | Agavaceae | Monocot |
| baneberry | Actaea | ACTAE | Ranunculaceae | Dicot |
| bank catclaw | Acacia redolens | ACRE9 | Fabaceae | Dicot |
| Barbary fig | Opuntia ficus-indica | OPFI | Cactaceae | Dicot |
| barbed goatgrass | Aegilops triuncialis | AETR | Poaceae | Monocot |
| barberry | Berberis | BERBE | Berberidaceae | Dicot |
| barberry | Mahonia | MAHON | Berberidaceae | Dicot |
| barbgrass | Hainardia | HAINA | Poaceae | Monocot |
| barbgrass | Hainardia cylindrica | HACY | Poaceae | Monocot |
| barbwire Russian thistle | Salsola paulsenii | SAPA8 | Chenopodiaceae | Dicot |
| bare monkeyflower | Mimulus nudatus | MINU2 | Scrophulariaceae | Dicot |
| barestem biscuitroot | Lomatium nudicaule | LONU2 | Apiaceae | Dicot |
| baretwig neststraw | Stylocline psilocarphoides | STPS | Asteraceae | Dicot |
| barley | Hordeum | HORDE | Poaceae | Monocot |
| barley | ×Elyhordeum | ELYHO | Poaceae | Monocot |
| Barneby"s phacelia | Phacelia barnebyana | PHBA | Hydrophyllaceae | Dicot |
| barnyardgrass | Echinochloa crus-galli | ECCR | Poaceae | Monocot |
| barranca brush | Ceanothus verrucosus | CEVE2 | Rhamnaceae | Dicot |
| barrel cactus | Ferocactus | FEROC | Cactaceae | Dicot |
| Barron"s wild buckwheat | Eriogonum spectabile | ERSP20 | Polygonaceae | Dicot |
| Barton Flats horkelia | Horkelia wilderae | HOWI | Rosaceae | Dicot |
| basalt milkvetch | Astragalus filipes | ASFI | Fabaceae | Dicot |
| basin big sagebrush | Artemisia tridentata ssp. tridentata | ARTRT | Asteraceae | Dicot |
| basin cryptantha | Cryptantha ambigua | CRAM3 | Boraginaceae | Dicot |
| basin nemophila | Nemophila breviflora | NEBR | Hydrophyllaceae | Dicot |
| basin wildrye | Leymus cinereus | LECI4 | Poaceae | Monocot |
| basin yellow cryptantha | Cryptantha confertiflora | CRCO12 | Boraginaceae | Dicot |
| basket rush | Juncus textilis | JUTE2 | Juncaceae | Monocot |
| bastard toadflax | Comandra | COMAN | Santalaceae | Dicot |
| bastard toadflax | Comandra umbellata | COUM | Santalaceae | Dicot |
| bastardcabbage | Rapistrum | RAPIS | Brassicaceae | Dicot |
| bastardsage | Eriogonum wrightii | ERWR | Polygonaceae | Dicot |
| bastardsage | Eriogonum wrightii var. membranaceum | ERWRM | Polygonaceae | Dicot |
| bastardsage | Eriogonum wrightii var. nodosum | ERWRN | Polygonaceae | Dicot |
| bastardsage | Eriogonum wrightii var. subscaposum | ERWRS | Polygonaceae | Dicot |
| bastardsage | Eriogonum wrightii var. trachygonum | ERWRT2 | Polygonaceae | Dicot |
| bastardsage | Eriogonum wrightii var. wrightii | ERWRW | Polygonaceae | Dicot |
| bauhinia | Bauhinia | BAUHI | Fabaceae | Dicot |
| bay forget-me-not | Myosotis laxa | MYLA | Boraginaceae | Dicot |
| bayberry | Morella | MOREL2 | Myricaceae | Dicot |
| beach knotweed | Polygonum paronychia | POPA7 | Polygonaceae | Dicot |
| beach pea | Lathyrus japonicus | LAJA | Fabaceae | Dicot |
| beach pea | Lathyrus japonicus var. maritimus | LAJAM | Fabaceae | Dicot |
| beach pine | Pinus contorta var. contorta | PICOC | Pinaceae | Gymnosperm |
| beach saltbush | Atriplex leucophylla | ATLE2 | Chenopodiaceae | Dicot |
| beach sand verbena | Abronia neurophylla | ABNE | Nyctaginaceae | Dicot |
| beach shieldpod | Dithyrea maritima | DIMA6 | Brassicaceae | Dicot |
| beach starwort | Stellaria littoralis | STLI | Caryophyllaceae | Dicot |
| beach strawberry | Fragaria chiloensis | FRCH | Rosaceae | Dicot |
| beach strawberry | Fragaria chiloensis ssp. lucida | FRCHL | Rosaceae | Dicot |
| beach suncup | Camissonia cheiranthifolia | CACH13 | Onagraceae | Dicot |
| beach suncup | Camissonia cheiranthifolia ssp. cheiranthifolia | CACHC | Onagraceae | Dicot |
| beach suncup | Camissonia cheiranthifolia ssp. suffruticosa | CACHS | Onagraceae | Dicot |
| beach tidytips | Layia carnosa | LACA4 | Asteraceae | Dicot |
| beach wormwood | Artemisia pycnocephala | ARPY3 | Asteraceae | Dicot |
| beachgrass | Ammophila | AMMOP | Poaceae | Monocot |
| beaded lipfern | Cheilanthes wootonii | CHWO | Pteridaceae | Fern |
| beaked clarkia | Clarkia rostrata | CLRO2 | Onagraceae | Dicot |
| beaked hawksbeard | Crepis vesicaria | CRVE3 | Asteraceae | Dicot |
| beaked hawksbeard | Crepis vesicaria ssp. taraxacifolia | CRVET | Asteraceae | Dicot |
| beaked hazelnut | Corylus cornuta | COCO6 | Betulaceae | Dicot |
| beaked spikerush | Eleocharis rostellata | ELRO2 | Cyperaceae | Monocot |
| beaked spiny polygala | Polygala heterorhyncha | POHE7 | Polygalaceae | Dicot |
| beaksedge | Rhynchospora | RHYNC3 | Cyperaceae | Monocot |
| bean | Phaseolus | PHASE | Fabaceae | Dicot |
| beancaper | Zygophyllum | ZYGOP | Zygophyllaceae | Dicot |
| Bear Valley buckwheat | Eriogonum ursinum | ERUR3 | Polygonaceae | Dicot |
| Bear Valley buckwheat | Eriogonum ursinum var. ursinum | ERURU | Polygonaceae | Dicot |
| Bear Valley milkvetch | Astragalus leucolobus | ASLE11 | Fabaceae | Dicot |
| Bear Valley sandwort | Arenaria ursina | ARUR | Caryophyllaceae | Dicot |
| bear"s breech | Acanthus mollis | ACMO8 | Acanthaceae | Dicot |
| bearbrush | Garrya fremontii | GAFR | Garryaceae | Dicot |
| beard lichen | Usnea | USNEA2 | Parmeliaceae | Lichen |
| bearded clover | Trifolium barbigerum var. barbigerum | TRBAB | Fabaceae | Dicot |
| bearded clover | Trifolium barbigerum | TRBA | Fabaceae | Dicot |
| bearded cryptantha | Cryptantha barbigera | CRBA5 | Boraginaceae | Dicot |
| bearded cupgrass | Eriochloa aristata | ERAR5 | Poaceae | Monocot |
| bearded fescue | Festuca subulata | FESU | Poaceae | Monocot |
| bearded flatsedge | Cyperus squarrosus | CYSQ | Cyperaceae | Monocot |
| bearded jewelflower | Streptanthus barbiger | STBA3 | Brassicaceae | Dicot |
| bearded melicgrass | Melica aristata | MEAR3 | Poaceae | Monocot |
| bearded monkeyflower | Mimulus barbatus | MIBA | Scrophulariaceae | Dicot |
| bearded popcornflower | Plagiobothrys hystriculus | PLHY | Boraginaceae | Dicot |
| bearded sprangletop | Leptochloa fusca ssp. fascicularis | LEFUF | Poaceae | Monocot |
| beardgrass | Bothriochloa | BOTHR | Poaceae | Monocot |
| beardless rabbitsfoot grass | Polypogon viridis | POVI9 | Poaceae | Monocot |
| beardless rabbitsfoot grass | Polypogon imberbis | POIM3 | Poaceae | Monocot |
| beardless wildrye | Leymus triticoides | LETR5 | Poaceae | Monocot |
| beardtongue | Penstemon | PENST | Scrophulariaceae | Dicot |
| beardtongue | Penstemon ×dubius | PEDU5 | Scrophulariaceae | Dicot |
| beardtongue | Penstemon ×peirsonii | PEPE32 | Scrophulariaceae | Dicot |
| beardtongue | Penstemon ×parishii | PEPA10 | Scrophulariaceae | Dicot |
| beargrass | Nolina | NOLIN | Liliaceae | Monocot |
| beargrass | Xerophyllum | XEROP | Liliaceae | Monocot |
| bearpoppy | Arctomecon | ARCTO | Papaveraceae | Dicot |
| Beatley"s clover | Trifolium andersonii ssp. beatleyae | TRANB | Fabaceae | Dicot |
| beautiful bluebells | Mertensia bella | MEBE | Boraginaceae | Dicot |
| beautiful phacelia | Phacelia pulchella | PHPU | Hydrophyllaceae | Dicot |
| beautiful rockcress | Arabis pulchra | ARPU2 | Brassicaceae | Dicot |
| beautiful rockcress | Arabis pulchra var. gracilis | ARPUG | Brassicaceae | Dicot |
| beautiful rockcress | Arabis pulchra var. pulchra | ARPUP2 | Brassicaceae | Dicot |
| beautiful sandwort | Minuartia rubella | MIRU3 | Caryophyllaceae | Dicot |
| beautiful spikerush | Eleocharis bella | ELBE | Cyperaceae | Monocot |
| beautiful woolly sunflower | Eriophyllum ambiguum | ERAM3 | Asteraceae | Dicot |
| beautiful woolly sunflower | Eriophyllum ambiguum var. ambiguum | ERAMA | Asteraceae | Dicot |
| beautiful woolly sunflower | Eriophyllum ambiguum var. paleaceum | ERAMP | Asteraceae | Dicot |
| beaver Indian breadroot | Pediomelum castoreum | PECA24 | Fabaceae | Dicot |
| beaver povertyweed | Monolepis spathulata | MOSP | Chenopodiaceae | Dicot |
| beavertail grass | Calochortus coeruleus | CACO3 | Liliaceae | Monocot |
| beavertail pricklypear | Opuntia basilaris | OPBA2 | Cactaceae | Dicot |
| beavertail pricklypear | Opuntia basilaris var. basilaris | OPBAB2 | Cactaceae | Dicot |
| beavertail pricklypear | Opuntia basilaris var. brachyclada | OPBAB | Cactaceae | Dicot |
| Bebb willow | Salix bebbiana | SABE2 | Salicaceae | Dicot |
| Beckwith"s clover | Trifolium beckwithii | TRBE2 | Fabaceae | Dicot |
| Beckwith"s violet | Viola beckwithii | VIBE2 | Violaceae | Dicot |
| Beckwith"s violet | Viola beckwithii ssp. beckwithii | VIBEB | Violaceae | Dicot |
| bedstraw | Galium | GALIU | Rubiaceae | Dicot |
| beebalm | Monarda | MONAR | Lamiaceae | Dicot |
| beeblossom | Gaura | GAURA | Onagraceae | Dicot |
| beebrush | Aloysia | ALOYS | Verbenaceae | Dicot |
| beegum onion | Allium hoffmanii | ALHO | Liliaceae | Monocot |
| beet | Beta | BETA | Chenopodiaceae | Dicot |
| beethistle | Eryngium articulatum | ERAR14 | Apiaceae | Dicot |
| beetle spurge | Euphorbia eriantha | EUER2 | Euphorbiaceae | Dicot |
| beggarticks | Bidens | BIDEN | Asteraceae | Dicot |
| belladonna | Atropa | ATROP | Solanaceae | Dicot |
| belladonna | Atropa bella-donna | ATBE | Solanaceae | Dicot |
| belladonna lily | Amaryllis belladonna | AMBE3 | Liliaceae | Monocot |
| Bellard"s smartweed | Polygonum patulum | POPA9 | Polygonaceae | Dicot |
| Bellardi bog sedge | Kobresia myosuroides | KOMY | Cyperaceae | Monocot |
| bellflower | Campanula | CAMPA | Campanulaceae | Dicot |
| bellis | Bellis | BELLI | Asteraceae | Dicot |
| belllflower African cornlily | Ixia campanulata | IXCA | Iridaceae | Monocot |
| bellshape gilia | Linanthus campanulatus | LICA37 | Polemoniaceae | Dicot |
| beloperone | Justicia californica | JUCA8 | Acanthaceae | Dicot |
| benitoa | Benitoa | BENIT | Asteraceae | Dicot |
| benitoa | Benitoa occidentalis | BEOC | Asteraceae | Dicot |
| BenLomond buckwheat | Eriogonum nudum var. decurrens | ERNUD | Polygonaceae | Dicot |
| bensoniella | Bensoniella | BENSO | Saxifragaceae | Dicot |
| bentflower fiddleneck | Amsinckia lunaris | AMLU | Boraginaceae | Dicot |
| bentgrass | Agrostis | AGROS2 | Poaceae | Monocot |
| bentgrass | Agrostis castellana | AGCA11 | Poaceae | Monocot |
| Bentham"s broom | Lotus benthamii | LOBE2 | Fabaceae | Dicot |
| bentspike fountaingrass | Pennisetum nervosum | PENE4 | Poaceae | Monocot |
| Berg"s hedgenettle | Stachys bergii | STBE6 | Lamiaceae | Dicot |
| bergia | Bergia | BERGI | Elatinaceae | Dicot |
| Bering chickweed | Cerastium beeringianum | CEBE2 | Caryophyllaceae | Dicot |
| Bering chickweed | Cerastium beeringianum ssp. earlei | CEBEE | Caryophyllaceae | Dicot |
| Bering"s tufted hairgrass | Deschampsia beringensis | DEBE2 | Poaceae | Monocot |
| Bermuda buttercup | Oxalis pes-caprae | OXPE | Oxalidaceae | Dicot |
| Bermudagrass | Cynodon | CYNOD | Poaceae | Monocot |
| Bermudagrass | Cynodon dactylon | CYDA | Poaceae | Monocot |
| Berry"s penstemon | Penstemon newberryi ssp. berryi | PENEB | Scrophulariaceae | Dicot |
| biannual lettuce | Lactuca ludoviciana | LALU | Asteraceae | Dicot |
| Bicknell"s cranesbill | Geranium bicknellii | GEBI2 | Geraniaceae | Dicot |
| biddy-biddy | Acaena novae-zelandiae | ACNO7 | Rosaceae | Dicot |
| Bidwell"s knotweed | Polygonum bidwelliae | POBI4 | Polygonaceae | Dicot |
| biennial cinquefoil | Potentilla biennis | POBI7 | Rosaceae | Dicot |
| biennial wormwood | Artemisia biennis | ARBI2 | Asteraceae | Dicot |
| biennial wormwood | Artemisia biennis var. biennis | ARBIB | Asteraceae | Dicot |
| big arroyo rockmat | Petrophytum acuminatum | PEAC4 | Rosaceae | Dicot |
| Big Bear Valley phlox | Phlox dolichantha | PHDO2 | Polemoniaceae | Dicot |
| big chickweed | Cerastium fontanum ssp. vulgare | CEFOV2 | Caryophyllaceae | Dicot |
| big deervetch | Lotus crassifolius | LOCR | Fabaceae | Dicot |
| big deervetch | Lotus crassifolius var. crassifolius | LOCRC | Fabaceae | Dicot |
| big deervetch | Lotus crassifolius var. otayensis | LOCRO | Fabaceae | Dicot |
| big devils beggartick | Bidens vulgata | BIVU | Asteraceae | Dicot |
| big galleta | Pleuraphis rigida | PLRI3 | Poaceae | Monocot |
| Big Pine biscuitroot | Lomatium rigidum | LORI2 | Apiaceae | Dicot |
| big quakinggrass | Briza maxima | BRMA | Poaceae | Monocot |
| big sacaton | Sporobolus wrightii | SPWR2 | Poaceae | Monocot |
| big sagebrush | Artemisia tridentata | ARTR2 | Asteraceae | Dicot |
| big sagebrush | Artemisia tridentata ssp. parishii | ARTRP2 | Asteraceae | Dicot |
| big sagebrush | Artemisia tridentata ssp. spiciformis | ARTRS2 | Asteraceae | Dicot |
| big saltbush | Atriplex lentiformis ssp. lentiformis | ATLEL | Chenopodiaceae | Dicot |
| big saltbush | Atriplex lentiformis | ATLE | Chenopodiaceae | Dicot |
| big squirreltail | Elymus multisetus | ELMU3 | Poaceae | Monocot |
| big tarweed | Blepharizonia plumosa | BLPL | Asteraceae | Dicot |
| big tarweed | Blepharizonia plumosa ssp. plumosa | BLPLP | Asteraceae | Dicot |
| big tarweed | Blepharizonia plumosa ssp. viscida | BLPLV | Asteraceae | Dicot |
| big trefoil | Lotus pedunculatus | LOPE80 | Fabaceae | Dicot |
| big western bittercress | Cardamine occidentalis | CAOC | Brassicaceae | Dicot |
| bigberry manzanita | Arctostaphylos glauca | ARGL4 | Ericaceae | Dicot |
| bigbract verbena | Verbena bracteata | VEBR | Verbenaceae | Dicot |
| bigcone Douglas-fir | Pseudotsuga macrocarpa | PSMA | Pinaceae | Gymnosperm |
| Bigelow sage | Artemisia bigelovii | ARBI3 | Asteraceae | Dicot |
| Bigelow"s bluegrass | Poa bigelovii | POBI | Poaceae | Monocot |
| Bigelow"s linanthus | Linanthus bigelovii | LIBI2 | Polemoniaceae | Dicot |
| Bigelow"s monkeyflower | Mimulus bigelovii | MIBI6 | Scrophulariaceae | Dicot |
| Bigelow"s monkeyflower | Mimulus bigelovii var. bigelovii | MIBIB2 | Scrophulariaceae | Dicot |
| Bigelow"s nolina | Nolina bigelovii | NOBI | Liliaceae | Monocot |
| Bigelow"s sneezeweed | Helenium bigelovii | HEBI | Asteraceae | Dicot |
| Bigelow"s tickseed | Coreopsis bigelovii | COBI | Asteraceae | Dicot |
| Bigelow"s tobacco | Nicotiana quadrivalvis var. bigelovii | NIQUB | Solanaceae | Dicot |
| Bigelow"s willow | Salix lasiolepis var. bigelovii | SALAB | Salicaceae | Dicot |
| bigflower agoseris | Agoseris grandiflora | AGGR | Asteraceae | Dicot |
| bigflower tellima | Tellima grandiflora | TEGR2 | Saxifragaceae | Dicot |
| bighead dustymaiden | Chaenactis macrantha | CHMA | Asteraceae | Dicot |
| bighead horkelia | Horkelia fusca ssp. capitata | HOFUC2 | Rosaceae | Dicot |
| bighead pygmycudweed | Evax prolifera | EVPR | Asteraceae | Dicot |
| bigleaf crownbeard | Verbesina dissita | VEDI | Asteraceae | Dicot |
| bigleaf lupine | Lupinus polyphyllus | LUPO2 | Fabaceae | Dicot |
| bigleaf lupine | Lupinus polyphyllus ssp. bernardinus | LUPOB | Fabaceae | Dicot |
| bigleaf lupine | Lupinus polyphyllus ssp. polyphyllus | LUPOP2 | Fabaceae | Dicot |
| bigleaf lupine | Lupinus polyphyllus ssp. polyphyllus var. grandifolius | LUPOG2 | Fabaceae | Dicot |
| bigleaf lupine | Lupinus polyphyllus ssp. polyphyllus var. pallidipes | LUPOP3 | Fabaceae | Dicot |
| bigleaf lupine | Lupinus polyphyllus ssp. polyphyllus var. polyphyllus | LUPOP4 | Fabaceae | Dicot |
| bigleaf lupine | Lupinus polyphyllus ssp. superbus | LUPOS | Fabaceae | Dicot |
| bigleaf maple | Acer macrophyllum | ACMA3 | Aceraceae | Dicot |
| bigleaf periwinkle | Vinca major | VIMA | Apocynaceae | Dicot |
| bigleaf sedge | Carex amplifolia | CAAM10 | Cyperaceae | Monocot |
| bigpod ceanothus | Ceanothus megacarpus | CEME | Rhamnaceae | Dicot |
| bigpod ceanothus | Ceanothus megacarpus var. megacarpus | CEMEM2 | Rhamnaceae | Dicot |
| bigpod sesbania | Sesbania herbacea | SEHE8 | Fabaceae | Dicot |
| bigseed alfalfa dodder | Cuscuta indecora | CUIN | Cuscutaceae | Dicot |
| bigseed alfalfa dodder | Cuscuta indecora var. indecora | CUINI | Cuscutaceae | Dicot |
| bigseed biscuitroot | Lomatium macrocarpum | LOMA3 | Apiaceae | Dicot |
| bigseed dodder | Cuscuta indecora var. neuropetala | CUINN | Cuscutaceae | Dicot |
| billion-dollar grass | Echinochloa frumentacea | ECFR | Poaceae | Monocot |
| bindweed | Convolvulus | CONVO | Convolvulaceae | Dicot |
| Bingham"s false bindweed | Calystegia sepium ssp. binghamiae | CASEB | Convolvulaceae | Dicot |
| Bioletti"s fleabane | Erigeron biolettii | ERBI7 | Asteraceae | Dicot |
| Bioletti"s rush broom | Lotus junceus var. biolettii | LOJUB | Fabaceae | Dicot |
| birch | Betula | BETUL | Betulaceae | Dicot |
| birchleaf mountain mahogany | Cercocarpus montanus var. glaber | CEMOG | Rosaceae | Dicot |
| bird vetch | Vicia cracca | VICR | Fabaceae | Dicot |
| bird vetch | Vicia cracca ssp. cracca | VICRC | Fabaceae | Dicot |
| bird"s-beak | Cordylanthus | CORDY | Scrophulariaceae | Dicot |
| bird"s-eye gilia | Gilia tricolor | GITR2 | Polemoniaceae | Dicot |
| bird"s-eye gilia | Gilia tricolor ssp. diffusa | GITRD | Polemoniaceae | Dicot |
| bird"s-eye gilia | Gilia tricolor ssp. tricolor | GITRT | Polemoniaceae | Dicot |
| bird"s-foot | Ornithopus | ORNIT2 | Fabaceae | Dicot |
| bird"s-foot trefoil | Lotus corniculatus | LOCO6 | Fabaceae | Dicot |
| bird"s-foot trefoil | Lotus corniculatus var. corniculatus | LOCOC5 | Fabaceae | Dicot |
| bird-of-paradise shrub | Caesalpinia gilliesii | CAGI | Fabaceae | Dicot |
| birdcage evening primrose | Oenothera deltoides | OEDE2 | Onagraceae | Dicot |
| birdcage evening primrose | Oenothera deltoides ssp. cognata | OEDEC2 | Onagraceae | Dicot |
| birdcage evening primrose | Oenothera deltoides ssp. deltoides | OEDED4 | Onagraceae | Dicot |
| birdeye pearlwort | Sagina procumbens | SAPR | Caryophyllaceae | Dicot |
| birdeye speedwell | Veronica persica | VEPE3 | Scrophulariaceae | Dicot |
| birdfoot checkerbloom | Sidalcea pedata | SIPE4 | Malvaceae | Dicot |
| birdfoot cliffbrake | Pellaea mucronata ssp. mucronata | PEMUM | Pteridaceae | Fern |
| birdfoot cliffbrake | Pellaea mucronata | PEMU | Pteridaceae | Fern |
| birdnest buckwheat | Eriogonum nidularium | ERNI4 | Polygonaceae | Dicot |
| Bisbee Peak rushrose | Helianthemum scoparium | HESC2 | Cistaceae | Dicot |
| Bishop pine | Pinus muricata | PIMU | Pinaceae | Gymnosperm |
| Bithynian vetch | Vicia bithynica | VIBI6 | Fabaceae | Dicot |
| bitter cherry | Prunus emarginata | PREM | Rosaceae | Dicot |
| bitter cherry | Prunus emarginata var. emarginata | PREME | Rosaceae | Dicot |
| bitter dock | Rumex obtusifolius | RUOB | Polygonaceae | Dicot |
| bitter fleabane | Erigeron acris | ERAC2 | Asteraceae | Dicot |
| bitter fleabane | Erigeron acris ssp. debilis | ERACD2 | Asteraceae | Dicot |
| bitter gooseberry | Ribes amarum | RIAM | Grossulariaceae | Dicot |
| bitter lettuce | Lactuca virosa | LAVI8 | Asteraceae | Dicot |
| bitter root | Lewisia rediviva | LERE7 | Portulacaceae | Dicot |
| bitter root | Lewisia rediviva var. minor | LEREM | Portulacaceae | Dicot |
| bitter root | Lewisia rediviva var. rediviva | LERER | Portulacaceae | Dicot |
| bitter rubberweed | Hymenoxys odorata | HYOD | Asteraceae | Dicot |
| bitter snakewood | Condalia globosa | COGL | Rhamnaceae | Dicot |
| bitter snakewood | Condalia globosa var. pubescens | COGLP | Rhamnaceae | Dicot |
| bitterbrush | Purshia | PURSH | Rosaceae | Dicot |
| bittercress | Cardamine | CARDA | Brassicaceae | Dicot |
| bituminaria | Bituminaria | BITUM | Fabaceae | Dicot |
| black alpine sedge | Carex nigricans | CANI2 | Cyperaceae | Monocot |
| black bindweed | Polygonum convolvulus | POCO10 | Polygonaceae | Dicot |
| black bindweed | Polygonum convolvulus var. convolvulus | POCOC2 | Polygonaceae | Dicot |
| black bogrush | Schoenus nigricans | SCNI | Cyperaceae | Monocot |
| black chokecherry | Prunus virginiana var. melanocarpa | PRVIM | Rosaceae | Dicot |
| black cottonwood | Populus balsamifera ssp. trichocarpa | POBAT | Salicaceae | Dicot |
| black crowberry | Empetrum nigrum | EMNI | Empetraceae | Dicot |
| black crowberry | Empetrum nigrum ssp. hermaphroditum | EMNIH | Empetraceae | Dicot |
| black crowberry | Empetrum nigrum ssp. nigrum | EMNIN | Empetraceae | Dicot |
| black elderberry | Sambucus nigra | SANI4 | Caprifoliaceae | Dicot |
| black flatsedge | Cyperus niger | CYNI2 | Cyperaceae | Monocot |
| black grama | Bouteloua eriopoda | BOER4 | Poaceae | Monocot |
| black hawthorn | Crataegus douglasii | CRDO2 | Rosaceae | Dicot |
| black locust | Robinia pseudoacacia | ROPS | Fabaceae | Dicot |
| black medick | Medicago lupulina | MELU | Fabaceae | Dicot |
| black mustard | Brassica nigra | BRNI | Brassicaceae | Dicot |
| black nightshade | Solanum nigrum | SONI | Solanaceae | Dicot |
| black oats | Avena strigosa | AVST2 | Poaceae | Monocot |
| black sage | Salvia mellifera | SAME3 | Lamiaceae | Dicot |
| black sagebrush | Artemisia nova | ARNO4 | Asteraceae | Dicot |
| black salsify | Scorzonera hispanica | SCHI2 | Asteraceae | Dicot |
| black sand spikerush | Eleocharis pachycarpa | ELPA | Cyperaceae | Monocot |
| black vetch | Vicia nigricans | VINI81 | Fabaceae | Dicot |
| black wattle | Acacia mearnsii | ACME80 | Fabaceae | Dicot |
| blackberry | Rubus | RUBUS | Rosaceae | Dicot |
| blackbrush | Coleogyne ramosissima | CORA | Rosaceae | Dicot |
| blackdisk medick | Medicago orbicularis | MEOR2 | Fabaceae | Dicot |
| blackeyed Susan | Rudbeckia hirta | RUHI2 | Asteraceae | Dicot |
| blackeyed Susan | Rudbeckia hirta var. pulcherrima | RUHIP | Asteraceae | Dicot |
| blackfoot | Melampodium | MELAM | Asteraceae | Dicot |
| blackfoot groundsmoke | Gayophytum racemosum | GARA | Onagraceae | Dicot |
| Blackfoot River evening primrose | Camissonia andina | CAAN14 | Onagraceae | Dicot |
| blackfruit dogwood | Cornus sessilis | COSE3 | Cornaceae | Dicot |
| blackseed sandspurry | Spergularia atrosperma | SPAT | Caryophyllaceae | Dicot |
| blacktack phacelia | Phacelia pachyphylla | PHPA | Hydrophyllaceae | Dicot |
| blackwood | Acacia melanoxylon | ACME | Fabaceae | Dicot |
| bladder campion | Silene latifolia | SILA21 | Caryophyllaceae | Dicot |
| bladder campion | Silene latifolia ssp. alba | SILAA3 | Caryophyllaceae | Dicot |
| bladder senna | Colutea arborescens | COAR6 | Fabaceae | Dicot |
| bladderfern | Cystopteris | CYSTO | Dryopteridaceae | Fern |
| bladdermallow | Herissantia crispa | HECR3 | Malvaceae | Dicot |
| bladdernut | Staphylea | STAPH | Staphyleaceae | Dicot |
| bladderpod | Lesquerella | LESQU | Brassicaceae | Dicot |
| bladderpod spiderflower | Cleome isomeris | CLIS | Capparaceae | Dicot |
| bladdersage | Salazaria | SALAZ | Lamiaceae | Dicot |
| bladderwort | Utricularia | UTRIC | Lentibulariaceae | Dicot |
| Blair"s wirelettuce | Stephanomeria blairii | STBL2 | Asteraceae | Dicot |
| Blakley"s spineflower | Chorizanthe blakleyi | CHBL | Polygonaceae | Dicot |
| blanketflower | Gaillardia | GAILL | Asteraceae | Dicot |
| blanketflower | Gaillardia aristata | GAAR | Asteraceae | Dicot |
| Blasdale bentgrass | Agrostis blasdalei | AGBL | Poaceae | Monocot |
| blazingstar | Mentzelia | MENTZ | Loasaceae | Dicot |
| bleeding heart | Dicentra | DICEN | Fumariaceae | Dicot |
| blepharipappus | Blepharipappus | BLEPH2 | Asteraceae | Dicot |
| blepharizonia | Blepharizonia | BLEPH3 | Asteraceae | Dicot |
| blepharizonia | Blepharizonia laxa | BLLA4 | Asteraceae | Dicot |
| blessed milkthistle | Silybum marianum | SIMA3 | Asteraceae | Dicot |
| blessed thistle | Cnicus benedictus | CNBE | Asteraceae | Dicot |
| blindeyes | Papaver dubium | PADU | Papaveraceae | Dicot |
| blite goosefoot | Chenopodium capitatum | CHCA4 | Chenopodiaceae | Dicot |
| Blochman"s erigeron | Erigeron blochmaniae | ERBL4 | Asteraceae | Dicot |
| Blochman"s larkspur | Delphinium parryi ssp. blochmaniae | DEPAB | Ranunculaceae | Dicot |
| Blochman"s liveforever | Dudleya blochmaniae | DUBL | Crassulaceae | Dicot |
| Blochman"s liveforever | Dudleya blochmaniae ssp. blochmaniae | DUBLB | Crassulaceae | Dicot |
| Blochman"s liveforever | Dudleya blochmaniae ssp. insularis | DUBLI | Crassulaceae | Dicot |
| blood currant | Ribes sanguineum var. deductum | RISAD | Grossulariaceae | Dicot |
| blood currant | Ribes sanguineum var. glutinosum | RISAG | Grossulariaceae | Dicot |
| blood currant | Ribes sanguineum var. melanocarpum | RISAM | Grossulariaceae | Dicot |
| bloodflower | Asclepias curassavica | ASCU | Asclepiadaceae | Dicot |
| Bloomer"s aster | Symphyotrichum campestre var. bloomeri | SYCAB | Asteraceae | Dicot |
| Bloomer"s buttercup | Ranunculus orthorhynchus var. bloomeri | RAORB | Ranunculaceae | Dicot |
| blow wives | Achyrachaena | ACHYR | Asteraceae | Dicot |
| blow wives | Achyrachaena mollis | ACMO2 | Asteraceae | Dicot |
| blue and white daisybush | Osteospermum ecklonis | OSEC | Asteraceae | Dicot |
| Blue Creek stonecrop | Sedum citrinum | SECI6 | Crassulaceae | Dicot |
| blue dwarf fleabane | Erigeron elegantulus | EREL4 | Asteraceae | Dicot |
| blue elderberry | Sambucus nigra ssp. cerulea | SANIC5 | Caprifoliaceae | Dicot |
| blue eyed Mary | Collinsia | COLLI | Scrophulariaceae | Dicot |
| blue fieldmadder | Sherardia arvensis | SHAR2 | Rubiaceae | Dicot |
| blue fiestaflower | Pholistoma auritum var. auritum | PHAUA2 | Hydrophyllaceae | Dicot |
| blue fiestaflower | Pholistoma auritum | PHAU4 | Hydrophyllaceae | Dicot |
| blue grama | Bouteloua gracilis | BOGR2 | Poaceae | Monocot |
| blue lettuce | Lactuca tatarica | LATA | Asteraceae | Dicot |
| blue lettuce | Lactuca tatarica var. pulchella | LATAP | Asteraceae | Dicot |
| Blue Mountain buckwheat | Eriogonum strictum | ERST4 | Polygonaceae | Dicot |
| Blue Mountain buckwheat | Eriogonum strictum ssp. proliferum | ERSTP | Polygonaceae | Dicot |
| Blue Mountain buckwheat | Eriogonum strictum ssp. proliferum var. anserinum | ERSTA3 | Polygonaceae | Dicot |
| Blue Mountain buckwheat | Eriogonum strictum ssp. proliferum var. proliferum | ERSTP3 | Polygonaceae | Dicot |
| Blue Mountain prairie clover | Dalea ornata | DAOR2 | Fabaceae | Dicot |
| blue mudplantain | Heteranthera limosa | HELI2 | Pontederiaceae | Monocot |
| blue nodding locoweed | Oxytropis deflexa var. sericea | OXDES | Fabaceae | Dicot |
| blue oak | Quercus douglasii | QUDO | Fagaceae | Dicot |
| blue paloverde | Parkinsonia florida | PAFL6 | Fabaceae | Dicot |
| blue panicum | Panicum antidotale | PAAN4 | Poaceae | Monocot |
| blue potatobush | Lycianthes rantonnetii | LYRA5 | Solanaceae | Dicot |
| blue sage | Salvia pachyphylla | SAPA5 | Lamiaceae | Dicot |
| blue skullcap | Scutellaria caerulea | SCCA31 | Lamiaceae | Dicot |
| blue skullcap | Scutellaria lateriflora | SCLA2 | Lamiaceae | Dicot |
| blue skullcap | Scutellaria lateriflora var. lateriflora | SCLAL2 | Lamiaceae | Dicot |
| blue threeawn | Aristida purpurea var. nealleyi | ARPUN | Poaceae | Monocot |
| blue wildrye | Elymus glaucus ssp. virescens | ELGLV | Poaceae | Monocot |
| blue wildrye | Elymus glaucus | ELGL | Poaceae | Monocot |
| blue wildrye | Elymus glaucus ssp. glaucus | ELGLG | Poaceae | Monocot |
| blue windflower | Anemone oregana | ANOR | Ranunculaceae | Dicot |
| blue windflower | Anemone oregana var. oregana | ANORO | Ranunculaceae | Dicot |
| blue-eyed grass | Sisyrinchium | SISYR | Iridaceae | Monocot |
| blue-tulip | Moraea polystachya | MOPO2 | Iridaceae | Monocot |
| bluebead | Clintonia | CLINT | Liliaceae | Monocot |
| bluebell bellflower | Campanula rotundifolia | CARO2 | Campanulaceae | Dicot |
| bluebell creeper | Sollya heterophylla | SOHE2 | Pittosporaceae | Dicot |
| bluebells | Mertensia | MERTE | Boraginaceae | Dicot |
| blueberry | Vaccinium | VACCI | Ericaceae | Dicot |
| blueblossom | Ceanothus thyrsiflorus | CETH | Rhamnaceae | Dicot |
| bluebonnet lupine | Lupinus palmeri | LUPA3 | Fabaceae | Dicot |
| bluebunch wheatgrass | Pseudoroegneria spicata | PSSP6 | Poaceae | Monocot |
| bluebunch wheatgrass | Pseudoroegneria spicata ssp. spicata | PSSPS | Poaceae | Monocot |
| bluecrown passionflower | Passiflora caerulea | PACA22 | Passifloraceae | Dicot |
| bluecup | Githopsis | GITHO | Campanulaceae | Dicot |
| bluecurls | Trichostema | TRICH9 | Lamiaceae | Dicot |
| bluedicks | Dichelostemma capitatum | DICA14 | Liliaceae | Monocot |
| bluedicks | Dichelostemma capitatum ssp. capitatum | DICAC5 | Liliaceae | Monocot |
| bluedicks | Dichelostemma capitatum ssp. pauciflorum | DICAP | Liliaceae | Monocot |
| bluefly honeysuckle | Lonicera caerulea var. cauriana | LOCAC3 | Caprifoliaceae | Dicot |
| bluegrass | Poa | POA | Poaceae | Monocot |
| bluegreen saltbush | Atriplex nummularia | ATNU | Chenopodiaceae | Dicot |
| bluehead gilia | Gilia capitata | GICA5 | Polemoniaceae | Dicot |
| bluehead gilia | Gilia capitata ssp. abrotanifolia | GICAA | Polemoniaceae | Dicot |
| bluehead gilia | Gilia capitata ssp. capitata | GICAC3 | Polemoniaceae | Dicot |
| bluehead gilia | Gilia capitata ssp. chamissonis | GICAC | Polemoniaceae | Dicot |
| bluehead gilia | Gilia capitata ssp. pedemontana | GICAP2 | Polemoniaceae | Dicot |
| bluehead gilia | Gilia capitata ssp. staminea | GICAS3 | Polemoniaceae | Dicot |
| bluehead gilia | Gilia capitata ssp. tomentosa | GICAT2 | Polemoniaceae | Dicot |
| bluejoint | Calamagrostis canadensis | CACA4 | Poaceae | Monocot |
| bluejoint | Calamagrostis canadensis var. canadensis | CACAC10 | Poaceae | Monocot |
| bluejoint | Calamagrostis canadensis var. langsdorffii | CACAL3 | Poaceae | Monocot |
| bluepod rockcress | Arabis glaucovalvula | ARGL2 | Brassicaceae | Dicot |
| bluestar | Amsonia | AMSON | Apocynaceae | Dicot |
| bluestem | Andropogon | ANDRO2 | Poaceae | Monocot |
| bluewitch | Solanum umbelliferum var. glabrescens | SOUMG | Solanaceae | Dicot |
| bluewitch | Solanum umbelliferum var. incanum | SOUMI | Solanaceae | Dicot |
| bluewitch nightshade | Solanum umbelliferum var. umbelliferum | SOUMU | Solanaceae | Dicot |
| bluewitch nightshade | Solanum umbelliferum | SOUM | Solanaceae | Dicot |
| bluish spikemoss | Selaginella asprella | SEAS | Selaginellaceae | Lycopod |
| blunt spikerush | Eleocharis obtusa | ELOB2 | Cyperaceae | Monocot |
| blunt tansymustard | Descurainia obtusa | DEOB | Brassicaceae | Dicot |
| blunt tansymustard | Descurainia obtusa ssp. adenophora | DEOBA | Brassicaceae | Dicot |
| bluntleaf yellowcress | Rorippa curvipes | ROCU2 | Brassicaceae | Dicot |
| bluntleaf yellowcress | Rorippa curvipes var. curvipes | ROCUC | Brassicaceae | Dicot |
| bluntleaf yellowcress | Rorippa curvipes var. truncata | ROCUT | Brassicaceae | Dicot |
| bluntlobe lupine | Lupinus obtusilobus | LUOB | Fabaceae | Dicot |
| bluntseed sweetroot | Osmorhiza depauperata | OSDE | Apiaceae | Dicot |
| blushing wild buckwheat | Eriogonum ursinum var. erubescens | ERURE | Polygonaceae | Dicot |
| bobtail barley | Hordeum intercedens | HOIN2 | Poaceae | Monocot |
| Boccone"s sandspurry | Spergularia bocconii | SPBO | Caryophyllaceae | Dicot |
| Bodie Hills cusickiella | Cusickiella quadricostata | CUQU | Brassicaceae | Dicot |
| Bodie Hills rockcress | Arabis bodiensis | ARBO | Brassicaceae | Dicot |
| bog alkaligrass | Puccinellia parishii | PUPA | Poaceae | Monocot |
| bog birch | Betula pumila | BEPU4 | Betulaceae | Dicot |
| bog birch | Betula pumila var. glandulifera | BEPUG | Betulaceae | Dicot |
| bog blueberry | Vaccinium uliginosum | VAUL | Ericaceae | Dicot |
| bog bulrush | Schoenoplectiella mucronata | SCMU15 | Cyperaceae | Monocot |
| bog sedge | Kobresia | KOBRE | Cyperaceae | Monocot |
| bog stitchwort | Minuartia stricta | MIST5 | Caryophyllaceae | Dicot |
| bog white violet | Viola lanceolata | VILA4 | Violaceae | Dicot |
| bog white violet | Viola lanceolata ssp. occidentalis | VILAO | Violaceae | Dicot |
| bog willowherb | Epilobium leptophyllum | EPLE2 | Onagraceae | Dicot |
| bog yellowcress | Rorippa palustris | ROPA2 | Brassicaceae | Dicot |
| Boggs Lake dodder | Cuscuta howelliana | CUHO | Cuscutaceae | Dicot |
| Boggs Lake hedgehyssop | Gratiola heterosepala | GRHE | Scrophulariaceae | Dicot |
| bogmat | Wolffiella | WOLFF2 | Lemnaceae | Monocot |
| bogrush | Schoenus | SCHOE4 | Cyperaceae | Monocot |
| Bolander beach pine | Pinus contorta var. bolanderi | PICOB | Pinaceae | Gymnosperm |
| Bolander"s bedstraw | Galium bolanderi | GABO | Rubiaceae | Dicot |
| Bolander"s bluegrass | Poa bolanderi | POBO | Poaceae | Monocot |
| Bolander"s hawkweed | Hieracium bolanderi | HIBO | Asteraceae | Dicot |
| Bolander"s knotweed | Polygonum bolanderi | POBO3 | Polygonaceae | Dicot |
| Bolander"s lily | Lilium bolanderi | LIBO | Liliaceae | Monocot |
| Bolander"s linanthus | Leptosiphon bolanderi | LEBO9 | Polemoniaceae | Dicot |
| Bolander"s madia | Kyhosia bolanderi | KYBO | Asteraceae | Dicot |
| Bolander"s milkvetch | Astragalus bolanderi | ASBO2 | Fabaceae | Dicot |
| Bolander"s mock dandelion | Phalacroseris bolanderi | PHBO2 | Asteraceae | Dicot |
| Bolander"s mock dandelion | Phalacroseris bolanderi var. bolanderi | PHBOB | Asteraceae | Dicot |
| Bolander"s mock dandelion | Phalacroseris bolanderi var. coronata | PHBOC3 | Asteraceae | Dicot |
| Bolander"s monkeyflower | Mimulus bolanderi | MIBO3 | Scrophulariaceae | Dicot |
| Bolander"s mule-ears | Agnorhiza bolanderi | AGBO4 | Asteraceae | Dicot |
| Bolander"s onion | Allium bolanderi | ALBO | Liliaceae | Monocot |
| Bolander"s onion | Allium bolanderi var. bolanderi | ALBOB | Liliaceae | Monocot |
| Bolander"s onion | Allium bolanderi var. mirabile | ALBOM | Liliaceae | Monocot |
| Bolander"s onion | Allium bolanderi var. stenanthum | ALBOS | Liliaceae | Monocot |
| Bolander"s pea | Lathyrus vestitus ssp. bolanderi | LAVEB | Fabaceae | Dicot |
| Bolander"s phacelia | Phacelia bolanderi | PHBO | Hydrophyllaceae | Dicot |
| Bolander"s quillwort | Isoetes bolanderi | ISBO | Isoetaceae | Quillwort |
| Bolander"s ragwort | Packera bolanderi | PABO6 | Asteraceae | Dicot |
| Bolander"s ragwort | Packera bolanderi var. bolanderi | PABOB | Asteraceae | Dicot |
| Bolander"s reedgrass | Calamagrostis bolanderi | CABO | Poaceae | Monocot |
| Bolander"s rush | Juncus bolanderi | JUBO | Juncaceae | Monocot |
| Bolander"s sedge | Carex bolanderi | CABO2 | Cyperaceae | Monocot |
| Bolander"s silene | Silene hookeri ssp. bolanderi | SIHOB | Caryophyllaceae | Dicot |
| Bolander"s spikerush | Eleocharis bolanderi | ELBO | Cyperaceae | Monocot |
| Bolander"s water-starwort | Callitriche heterophylla ssp. bolanderi | CAHEB3 | Callitrichaceae | Dicot |
| Bolander"s woodland-star | Lithophragma bolanderi | LIBO5 | Saxifragaceae | Dicot |
| Bolander"s woodreed | Cinna bolanderi | CIBO2 | Poaceae | Monocot |
| Bolander"s yampah | Perideridia bolanderi | PEBO2 | Apiaceae | Dicot |
| Bolander"s yampah | Perideridia bolanderi ssp. bolanderi | PEBOB | Apiaceae | Dicot |
| Bolander"s yampah | Perideridia bolanderi ssp. involucrata | PEBOI | Apiaceae | Dicot |
| Bolinas manzanita | Arctostaphylos virgata | ARVI3 | Ericaceae | Dicot |
| Bolivian fuchsia | Fuchsia boliviana | FUBO | Onagraceae | Dicot |
| Bonneville shootingstar | Dodecatheon conjugens | DOCO | Primulaceae | Dicot |
| Bonneville shootingstar | Dodecatheon conjugens ssp. conjugens | DOCOC3 | Primulaceae | Dicot |
| Bonny Doon manzanita | Arctostaphylos silvicola | ARSI | Ericaceae | Dicot |
| Booth"s evening primrose | Camissonia boothii | CABO7 | Onagraceae | Dicot |
| Booth"s evening primrose | Camissonia boothii ssp. intermedia | CABOI | Onagraceae | Dicot |
| Booth"s suncup | Camissonia boothii ssp. boothii | CABOB | Onagraceae | Dicot |
| Booth"s willow | Salix boothii | SABO2 | Salicaceae | Dicot |