| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| ALPU9 | Alectoria pubescens (L.) R. Howe | Pseudephebe pubescens | Parmeliaceae
|
| ALSAS2 | Alectoria sarmentosa (Ach.) Ach. ssp. sarmentosa | witch's hair lichen | Alectoriaceae
|
| ALSAV | Alectoria sarmentosa (Ach.) Ach. ssp. vexillifera (Nyl.) D. Hawksw. | witch's hair lichen | Alectoriaceae
|
| ALSA9 | Alectoria sarmentosa (Ach.) Ach. | witch's hair lichen | Alectoriaceae
|
| ALSE6 | Alectoria setacea (Ach.) Mot. | Bryoria capillaris | Parmeliaceae
|
| ALSI6 | Alectoria simplicior (Vainio) Lynge | Bryoria simplicior | Parmeliaceae
|
| ALST8 | Alectoria stigmata Bystrek | Alectoria sarmentosa ssp. sarmentosa | Alectoriaceae
|
| ALSU3 | Alectoria subcana (Nyl. ex Stizenb.) Gyelnik | Bryoria subcana | Parmeliaceae
|
| ALSU4 | Alectoria subdivergens E. Dahl | Nodobryoria subdivergens | Parmeliaceae
|
| ALSU5 | Alectoria subsarmentosa Stirton | Alectoria sarmentosa ssp. sarmentosa | Alectoriaceae
|
| ALSU6 | Alectoria subtilis Mot. | Bryoria pseudofuscescens | Parmeliaceae
|
| ALTE9 | Alectoria tenerrima Mot. | Bryoria fremontii | Parmeliaceae
|
| ALTE10 | Alectoria tenuis E. Dahl | Bryoria tenuis | Parmeliaceae
|
| ALTH | Alectoria thrausta Ach. | Ramalina thrausta | Ramalinaceae
|
| ALTO3 | Alectoria tortuosa G. Merr. | Bryoria tortuosa | Parmeliaceae
|
| ALVA5 | Alectoria vancouverensis (Gyelnik) Gyelnik ex Brodo & D. Hawksw. | Vancouver witch's hair lichen | Alectoriaceae
|
| ALVE5 | Alectoria vexillifera (Nyl.) Stizenb. | Alectoria sarmentosa ssp. vexillifera | Alectoriaceae
|
| ALVI9 | Alectoria virens auct. | Bryoria tortuosa | Parmeliaceae
|
| ALECT3 | Alectoria Ach. | witch's hair lichen | Alectoriaceae
|
| ALAS | Alectra aspera (Cham. & Schlecht.) L.O. Williams | Alectra fluminensis | Scrophulariaceae
|
| ALFL2 | Alectra fluminensis (Vell.) Stearn | yerba de hierro | Scrophulariaceae
|
| ALECT2 | Alectra Thunb. | alectra | Scrophulariaceae
|
| ALMAA | Alectryon macrococcus Radlk. var. auwahiensis G. Linney | Hawai'i alectryon | Sapindaceae
|
| ALMAM2 | Alectryon macrococcus Radlk. var. macrococcus | Hawai'i alectryon | Sapindaceae
|
| ALMA | Alectryon macrococcus Radlk. | Hawai'i alectryon | Sapindaceae
|
| ALMA2 | Alectryon mahoe St. John & Frederick | Alectryon macrococcus var. macrococcus | Sapindaceae
|
| ALECT | Alectryon Gaertn. | alectryon | Sapindaceae
|
| ALAC2 | Aletes acaulis (Torr.) Coult. & Rose | stemless Indian parsley | Apiaceae
|
| ALAN3 | Aletes anisatus (Gray) Theobald & Tseng | Rocky Mountain Indian parsley | Apiaceae
|
| ALBI5 | Aletes bipinnata (S. Wats.) W.A. Weber | Cymopterus nivalis | Apiaceae
|
| ALDA2 | Aletes davidsonii Coult. & Rose | Pteryxia davidsonii | Apiaceae
|
| ALEA | Aletes eastwoodiae (Coult. & Rose) W.A. Weber | Lomatium eastwoodiae | Apiaceae
|
| ALFI3 | Aletes filifolius Mathias, Constance & Theobald | TransPecos Indian parsley | Apiaceae
|
| ALHE | Aletes hendersonii (Coult. & Rose) W.A. Weber | Pteryxia hendersonii | Apiaceae
|
| ALHU | Aletes humilis Coult. & Rose | Colorado aletes | Apiaceae
|
| ALJU2 | Aletes juncea (Barneby & N. Holmgren) W.A. Weber | Lomatium junceum | Apiaceae
|
| ALLA6 | Aletes latiloba (Rydb.) W.A. Weber | Lomatium latilobum | Apiaceae
|
| ALLI2 | Aletes lithophila (Mathias) W.A. Weber | Neoparrya lithophila | Apiaceae
|
| ALLO5 | Aletes longiloba (Rydb.) W.A. Weber | Pteryxia hendersonii | Apiaceae
|
| ALMAB | Aletes macdougalii Coult. & Rose ssp. breviradiatus Theobald & Tseng | MacDougal's Indian parsley | Apiaceae
|
| ALMAM | Aletes macdougalii Coult. & Rose ssp. macdougalii | MacDougal's Indian parsley | Apiaceae
|
| ALMA3 | Aletes macdougalii Coult. & Rose | MacDougal's Indian parsley | Apiaceae
|
| ALME4 | Aletes megarrhiza (A. Nels.) W.A. Weber | Lomatium nuttallii | Apiaceae
|
| ALMI8 | Aletes minima (Mathias) W.A. Weber | Lomatium minimum | Apiaceae
|
| ALNI2 | Aletes nivalis (S. Wats.) W.A. Weber | Cymopterus nivalis | Apiaceae
|
| ALNU | Aletes nuttallii (Gray) W.A. Weber | Lomatium nuttallii | Apiaceae
|
| ALPA15 | Aletes parryi (S. Wats.) W.A. Weber | Lomatium parryi | Apiaceae
|
| ALPE7 | Aletes petraea (M.E. Jones) W.A. Weber | Pteryxia petraea | Apiaceae
|
| ALSC10 | Aletes scabra (Coult. & Rose) W.A. Weber | Lomatium scabrum var. scabrum | Apiaceae
|
| ALSE5 | Aletes sessiliflorus Theobald & Tseng | sessileflower Indian parsley | Apiaceae
|
| ALTE11 | Aletes tenuifolius (Nutt. ex Torr. & Gray) W.A. Weber | Musineon tenuifolium | Apiaceae
|
| ALETE | Aletes Coult. & Rose | Indian parsley | Apiaceae
|
| ALAU | Aletris aurea Walt. | golden colicroot | Liliaceae
|
| ALBR6 | Aletris bracteata Northrop | bracted colicroot | Liliaceae
|
| ALFA2 | Aletris farinosa L. | white colicroot | Liliaceae
|
| ALJA4 | Aletris japonica Houtt. | Hosta lancifolia | Liliaceae
|
| ALJA3 | Aletris japonica Thunb. | Hosta lancifolia | Liliaceae
|
| ALLU | Aletris lutea Small | yellow colicroot | Liliaceae
|
| ALOB3 | Aletris obovata Nash | southern colicroot | Liliaceae
|
| ALTO2 | Aletris �tottenii E.T. Br. | | Liliaceae
|
| ALETR | Aletris L. | colicroot | Liliaceae
|
| ALCO12 | Aleurites cordata (Thunb.) R. Br. ex Steudel | Vernicia cordata | Euphorbiaceae
|
| ALFO | Aleurites fordii Hemsl. | Vernicia fordii | Euphorbiaceae
|
| ALJA7 | Aleurites javanica Gand. | Aleurites moluccana | Euphorbiaceae
|
| ALMO2 | Aleurites moluccana (L.) Willd. | Indian walnut | Euphorbiaceae
|
| ALMO11 | Aleurites montana (Lour.) P. Wilson | mu oil tree | Euphorbiaceae
|
| ALTR10 | Aleurites triloba Forster & Forster f. | Aleurites moluccana | Euphorbiaceae
|
| ALTR11 | Aleurites trisperma Blanco | Reutealis trisperma | Euphorbiaceae
|
| ALEUR | Aleurites J.R. & G. Forst. | aleurites | Euphorbiaceae
|
| ALCRN | Aleuritopteris cretacea (Liebm.) Fourn. ssp. nigrescens (Ewan) Munz | Notholaena californica ssp. californica | Pteridaceae
|
| ALCR15 | Aleuritopteris cretacea auct. non (Liebm.) Fourn. | Notholaena californica ssp. californica | Pteridaceae
|
| ALCA | Alhagi camelorum Fisch. | Alhagi maurorum | Fabaceae
|
| ALMA12 | Alhagi maurorum Medik. | camelthorn | Fabaceae
|
| ALPS3 | Alhagi pseudalhagi (Bieb.) Desv. ex B. Keller & Schaparenko | Alhagi maurorum | Fabaceae
|
| ALHAG | Alhagi Gagnebin | alhagi | Fabaceae
|
| ALBR10 | Alisma brevipes Greene | Alisma triviale | Alismataceae
|
| ALGE3 | Alisma geyeri Torr. | Alisma gramineum | Alismataceae
|
| ALGRA | Alisma gramineum Lej. var. angustissimum (DC.) Hendricks | Alisma gramineum | Alismataceae
|
| ALGRG2 | Alisma gramineum Lej. var. geyeri (Torr.) Lam. | Alisma gramineum | Alismataceae
|
| ALGRG3 | Alisma gramineum Lej. var. graminifolium (Wahlenb.) Hendricks | Alisma gramineum | Alismataceae
|
| ALGRW | Alisma gramineum Lej. var. wahlenbergii auct. non (Holmb.) Raymond & Kucyniak | Alisma gramineum | Alismataceae
|
| ALGR | Alisma gramineum Lej. | narrowleaf water plantain | Alismataceae
|
| ALLA5 | Alisma lanceolatum Gray | Alisma gramineum | Alismataceae
|
| ALLA2 | Alisma lanceolatum Withering | lanceleaf water plantain | Alismataceae
|
| ALPLB | Alisma plantago-aquatica L. ssp. brevipes (Greene) Samuelsson | Alisma triviale | Alismataceae
|
| ALPLS | Alisma plantago-aquatica L. ssp. subcordatum (Raf.) Hult�n | Alisma subcordatum | Alismataceae
|
| ALPLA | Alisma plantago-aquatica L. var. americanum J.A. Schultes | Alisma triviale | Alismataceae
|
| ALPLB2 | Alisma plantago-aquatica L. var. brevipes (Greene) Victorin | Alisma triviale | Alismataceae
|
| ALPLP | Alisma plantago-aquatica L. var. parviflorum (Pursh) Torr. | Alisma subcordatum | Alismataceae
|
| ALPL | Alisma plantago-aquatica L. | American waterplantain | Alismataceae
|
| ALRA2 | Alisma ranunculoides L. | Baldellia ranunculoides | Alismataceae
|
| ALSU | Alisma subcordatum Raf. | American water plantain | Alismataceae
|
| ALTR7 | Alisma triviale Pursh | northern water plantain | Alismataceae
|
| ALISM | Alisma L. | water plantain | Alismataceae
|
| ALTI | Alkanna tinctoria (L.) Tausch | alkanna | Boraginaceae
|
| ALKAN | Alkanna Tausch | alkanna | Boraginaceae
|
| ALBL | Allamanda blanchetii A. DC. | | Apocynaceae
|
| ALCAG | Allamanda cathartica L. var. grandiflora (Aubl.) Bailey & C.P. Raffill | Allamanda cathartica | Apocynaceae
|
| ALCA7 | Allamanda cathartica L. | golden trumpet | Apocynaceae
|
| ALNE7 | Allamanda neriifolia Hook. f. | Allamanda schottii | Apocynaceae
|
| ALSC4 | Allamanda schottii Pohl | | Apocynaceae
|