| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| BASP2 | Bacidia sphaeroides (Dickson) Zahlbr. | Mycobilimbia sphaeroides | Porpidiaceae
|
| BASP3 | Bacidia sphaeroides auct. | Mycobilimbia carneoalbida | Porpidiaceae
|
| BAST5 | Bacidia stigmatella (Tuck.) Zahlbr. | Lecania stigmatella | Bacidiaceae
|
| BASU10 | Bacidia subfuscula (Nyl.) Th. Fr. | Lecania subfuscula | Bacidiaceae
|
| BASU3 | Bacidia subgranulosa (Tuck.) Riddle | dotted lichen | Bacidiaceae
|
| BASU4 | Bacidia subincompta (Nyl.) Arnold | dotted lichen | Bacidiaceae
|
| BASU5 | Bacidia suffusa (Fr.) A. Schneider | dotted lichen | Bacidiaceae
|
| BATE5 | Bacidia tetramera (De Not.) Coppins | Mycobilimbia tetramera | Porpidiaceae
|
| BATR3 | Bacidia trachona (Ach.) Lettau | dotted lichen | Bacidiaceae
|
| BATR6 | Bacidia trisepta (Hellbom) Zahlbr. | Micarea peliocarpa | Micareaceae
|
| BAUM | Bacidia umbrina (Ach.) Bausch | Scoliciosporum umbrinum | Lecanoraceae
|
| BAVE6 | Bacidia vermifera (Nyl.) Fr. | dotted lichen | Bacidiaceae
|
| BACID | Bacidia De Not. | dotted lichen | Bacidiaceae
|
| BAAE2 | Bacidina aenea S. Ekman | | Lecanoraceae
|
| BAAP2 | Bacidina apiahica (Mull. Arg.) Vezda | | Lecanoraceae
|
| BAAR9 | Bacidina arnoldiana (Korber) Wirth & Vezda | | Lecanoraceae
|
| BAAS4 | Bacidina assulata (Korber) S. Ekman | | Lecanoraceae
|
| BACA17 | Bacidina californica S. Ekman | | Lecanoraceae
|
| BACH6 | Bacidina chloroticula (Nyl.) Vezda & Poelt | | Lecanoraceae
|
| BACR5 | Bacidina crystallifera S. Ekman | | Lecanoraceae
|
| BAEG4 | Bacidina egenula (Nyl.) Vezda | | Lecanoraceae
|
| BAEG5 | Bacidina egenuloidea (Fink) S. Ekman | | Lecanoraceae
|
| BAIN12 | Bacidina inundata (Fr.) Vezda | | Lecanoraceae
|
| BAPH2 | Bacidina phacodes (Korber) Vezda | | Lecanoraceae
|
| BARA6 | Bacidina ramea S. Ekman | | Lecanoraceae
|
| BASQ | Bacidina squamellosa S. Ekman | | Lecanoraceae
|
| BAVA4 | Bacidina varia S. Ekman | | Lecanoraceae
|
| BACID2 | Bacidina Vezda | bacidina | Lecanoraceae
|
| BAACM | Bacopa acuminata (Walt.) B.L. Robins. var. microphylla (Raf.) Fern. | Mecardonia acuminata var. microphylla | Scrophulariaceae
|
| BAAC | Bacopa acuminata (Walt.) B.L. Robins. | Mecardonia acuminata var. acuminata | Scrophulariaceae
|
| BACA | Bacopa caroliniana (Walt.) B.L. Robins. | blue waterhyssop | Scrophulariaceae
|
| BACY | Bacopa cyclophylla Fern. | Bacopa innominata | Scrophulariaceae
|
| BAEG | Bacopa egensis (Poepp.) Pennell | Brazilian waterhyssop | Scrophulariaceae
|
| BAEI | Bacopa eisenii (Kellogg) Pennell | Gila River waterhyssop | Scrophulariaceae
|
| BAIN2 | Bacopa innominata (G. Maza) Alain | tropical waterhyssop | Scrophulariaceae
|
| BAMO | Bacopa monnieri (L.) Pennell | herb of grace | Scrophulariaceae
|
| BANO | Bacopa nobsiana Mason | Bacopa rotundifolia | Scrophulariaceae
|
| BAPR3 | Bacopa procumbens (Miller) Greenman | waterhyssop | Scrophulariaceae
|
| BARE | Bacopa repens (Sw.) Wettst. | creeping waterhyssop | Scrophulariaceae
|
| BARO | Bacopa rotundifolia (Michx.) Wettst. | disk waterhyssop | Scrophulariaceae
|
| BASI2 | Bacopa simulans Fern. | Bacopa rotundifolia | Scrophulariaceae
|
| BAST3 | Bacopa stragula Fern. | Bacopa innominata | Scrophulariaceae
|
| BAST4 | Bacopa stricta (Schrad.) B.L. Robins. | yerba de culebra | Scrophulariaceae
|
| BACOP | Bacopa Aubl. | waterhyssop | Scrophulariaceae
|
| BAAC2 | Bactris acanthophylla Mart. | Aiphanes minima | Arecaceae
|
| BAGA2 | Bactris gasipaes Kunth | peach palm | Arecaceae
|
| BAGU | Bactris guineensis (L.) H. Moore | Guinea bactris | Arecaceae
|
| BACTR2 | Bactris Jacq. ex Scop. | bactris palm | Arecaceae
|
| BABR6 | Bactrospora brevispora R. C. Harris | | Opegraphaceae
|
| BABR7 | Bactrospora brodoi Egea & Torrente | | Opegraphaceae
|
| BACL2 | Bactrospora clementis (Hasse) | | Opegraphaceae
|
| BADE7 | Bactrospora denticulata (Vainio) Egea & Torrente | | Opegraphaceae
|
| BADR | Bactrospora dryina (Ach.) A. Massal. | | Opegraphaceae
|
| BAIN14 | Bactrospora integrispora Seaver | Bactrospora denticulata | Opegraphaceae
|
| BAMA12 | Bactrospora macrospora R. C. Harris | | Opegraphaceae
|
| BAME6 | Bactrospora mesospora R. C. Harris | | Opegraphaceae
|
| BAMY2 | Bactrospora myriadea (Fee) Egea & Torrente | | Opegraphaceae
|
| BANE3 | Bactrospora nematospora R. C. Harris | Bactrospora myriadea | Opegraphaceae
|
| BAPA6 | Bactrospora patellarioides (Nyl.) Vainio | | Opegraphaceae
|
| BASP5 | Bactrospora spiralis Egea & Torrente | | Opegraphaceae
|
| BACTR | Bactrospora A. Massal. | bactrospora | Opegraphaceae
|
| BAPO2 | Badiera portoricensis Britt. | Polygala penaea ssp. portoricensis | Polygalaceae
|
| BAFR4 | Baeckea frutescens L. | baeckea | Myrtaceae
|
| BAVI9 | Baeckea virgata (J.R. Forst. & G. Forst.) Andrews | tall baeckea | Myrtaceae
|
| BAECK | Baeckea L. | baeckea | Myrtaceae
|
| BAAB2 | Baeomyces absolutus Tuck. | Dibaeis absoluta | Baeomycetaceae
|
| BACA10 | Baeomyces carneus Florke | cap lichen | Baeomycetaceae
|
| BAFU4 | Baeomyces fungoides (Sw.) Ach. | Dibaeis baeomyces | Baeomycetaceae
|
| BAPL60 | Baeomyces placophyllus Ach. | cap lichen | Baeomycetaceae
|
| BARO4 | Baeomyces roseus Pers. | Dibaeis baeomyces | Baeomycetaceae
|
| BARU5 | Baeomyces rufus (Hudson) Rebent. | cap lichen | Baeomycetaceae
|
| BAEOM2 | Baeomyces Pers. | cap lichen | Baeomycetaceae
|
| BAAL6 | Baeothryon alpinum (L.) Egor. | Trichophorum alpinum | Cyperaceae
|
| BACA20 | Baeothryon caespitosum (L.) A. Dietr. | Trichophorum caespitosum | Cyperaceae
|
| BACE | Baeothryon cespitosum (L.) A. Dietr. [orthographic variant] | Trichophorum caespitosum | Cyperaceae
|
| BACL3 | Baeothryon clementis (M.E. Jones) A.& D. L�ve | Trichophorum clementis | Cyperaceae
|
| BACL4 | Baeothryon clintonii (Gray) A.& D. L�ve | Trichophorum clintonii | Cyperaceae
|
| BAPU4 | Baeothryon pumilum (Vahl) A.& D. L�ve | Trichophorum pumilum | Cyperaceae
|
| BAVE8 | Baeothryon verecundum (Fern.) A.& D. L�ve | Trichophorum planifolium | Cyperaceae
|
| BABA2 | Baeria bakeri J.T. Howell | Lasthenia macrantha ssp. bakeri | Asteraceae
|
| BACA6 | Baeria californica (Hook.) Chambers | Lasthenia coronaria | Asteraceae
|
| BACHG | Baeria chrysostoma Fisch. & C.A. Mey. ssp. gracilis (DC.) Ferris | Lasthenia californica | Asteraceae
|
| BACHH | Baeria chrysostoma Fisch. & C.A. Mey. ssp. hirsutula (Greene) Ferris | Lasthenia californica | Asteraceae
|
| BACHG2 | Baeria chrysostoma Fisch. & C.A. Mey. var. gracilis (DC.) Hall | Lasthenia californica | Asteraceae
|
| BACH | Baeria chrysostoma Fisch. & C.A. Mey. | Lasthenia californica | Asteraceae
|
| BADE4 | Baeria debilis Greene ex Gray | Lasthenia debilis | Asteraceae
|
| BAFRC | Baeria fremontii (Torr. ex Gray) Gray var. conjugens (Greene) Ferris | Lasthenia conjugens | Asteraceae
|
| BAFRH | Baeria fremontii (Torr. ex Gray) Gray var. heterochaeta Hoover | Lasthenia fremontii | Asteraceae
|
| BAFR3 | Baeria fremontii (Torr. ex Gray) Gray | Lasthenia fremontii | Asteraceae
|
| BAHI5 | Baeria hirsutula (Greene) Greene | Lasthenia californica | Asteraceae
|
| BALE5 | Baeria leptalea (Gray) Gray | Lasthenia leptalea | Asteraceae
|
| BAMAB | Baeria macrantha (Gray) Gray var. bakeri (J.T. Howell) Keck | Lasthenia macrantha ssp. bakeri | Asteraceae
|
| BAMAP2 | Baeria macrantha (Gray) Gray var. pauciaristata Gray | Lasthenia macrantha ssp. macrantha | Asteraceae
|
| BAMAT | Baeria macrantha (Gray) Gray var. thalassophila J.T. Howell | Lasthenia macrantha ssp. macrantha | Asteraceae
|
| BAMA9 | Baeria macrantha (Gray) Gray | Lasthenia macrantha ssp. macrantha | Asteraceae
|
| BAMA6 | Baeria maritima Gray | Lasthenia maritima | Asteraceae
|
| BAMI7 | Baeria microglossa (DC.) Greene | Lasthenia microglossa | Asteraceae
|
| BAMIM | Baeria minor (DC.) Ferris ssp. maritima (Gray) Ferris | Lasthenia maritima | Asteraceae
|
| BAMI5 | Baeria minor (DC.) Ferris | Lasthenia minor | Asteraceae
|
| BAPL4 | Baeria platycarpha (Gray) Gray | Lasthenia platycarpha | Asteraceae
|
| BAUL | Baeria uliginosa (Nutt.) Gray | Lasthenia minor | Asteraceae
|