| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| BRARG | Brachyelytrum aristosum (Michx.) Trel. var. glabratum Vasey ex Millsp. | Brachyelytrum septentrionale | Poaceae
|
| BRAR9 | Brachyelytrum aristosum (Michx.) Trel. | Brachyelytrum erectum | Poaceae
|
| BRERG | Brachyelytrum erectum (Schreb. ex Spreng.) Beauv. var. glabratum (Vasey ex Millsp.) Koyama & Kawano | Brachyelytrum septentrionale | Poaceae
|
| BRERS | Brachyelytrum erectum (Schreb. ex Spreng.) Beauv. var. septentrionale Babel | Brachyelytrum septentrionale | Poaceae
|
| BRER2 | Brachyelytrum erectum (Schreb. ex Spreng.) Beauv. | bearded shorthusk | Poaceae
|
| BRSE2 | Brachyelytrum septentrionale (Babel) G. Tucker | northern shorthusk | Poaceae
|
| BRACH2 | Brachyelytrum Beauv. | shorthusk | Poaceae
|
| BRAN6 | Brachymenium andersonii Crum | Anderson's brachymenium moss | Bryaceae
|
| BRER7 | Brachymenium erectum (Hook.) Marg. | erect brachymenium moss | Bryaceae
|
| BRKL | Brachymenium klotzschii (Schwaegr.) Par. | Klotzsch's brachymenium moss | Bryaceae
|
| BRMA10 | Brachymenium macrocarpum Card. | Brachymenium klotzschii | Bryaceae
|
| BRME3 | Brachymenium mexicanum Mont. | Brachymenium erectum | Bryaceae
|
| BRSP7 | Brachymenium speciosum (Hook. f. & Wils.) Steere | brachymenium moss | Bryaceae
|
| BRSY2 | Brachymenium systylium (C. M�ll.) Jaeg. | brachymenium moss | Bryaceae
|
| BRACH12 | Brachymenium Schwaegr. | brachymenium moss | Bryaceae
|
| BRTR6 | Brachyodon trichodes (Web.) Nees & Hornsch. in Nees et al. | Brachydontium trichodes | Seligeriaceae
|
| BRDI2 | Brachypodium distachyon (L.) Beauv. | purple false brome | Poaceae
|
| BRPH3 | Brachypodium phoenicoides (L.) Roemer & J.A. Schultes | thinleaf false brome | Poaceae
|
| BRPI | Brachypodium pinnatum (L.) Beauv. | heath false brome | Poaceae
|
| BRSY | Brachypodium sylvaticum (Huds.) Beauv. | slender false brome | Poaceae
|
| BRACH3 | Brachypodium Beauv. | false brome | Poaceae
|
| BROV3 | Brachypterys ovata (Cav.) Small | Stigmaphyllon bannisterioides | Malpighiaceae
|
| BRDR | Brachyris dracunculoides DC. | Amphiachyris dracunculoides | Asteraceae
|
| BRMI6 | Brachyris microcephala DC. | Gutierrezia microcephala | Asteraceae
|
| BRWR | Brachystigma wrightii (Gray) Pennell | Arizona desert foxglove | Scrophulariaceae
|
| BRACH5 | Brachystigma Pennell | desert foxglove | Scrophulariaceae
|
| BRACR | Brachythecium acuminatum (Hedw.) Aust. var. rupincola (Hedw.) Rau & Herv. | Brachythecium acuminatum | Brachytheciaceae
|
| BRACS | Brachythecium acuminatum (Hedw.) Aust. var. setosum (Hedw.) Rau & Herv. | Brachythecium acuminatum | Brachytheciaceae
|
| BRAC3 | Brachythecium acuminatum (Hedw.) Aust. | acuminate brachythecium moss | Brachytheciaceae
|
| BRAC4 | Brachythecium acutum (Mitt.) Sull. | acute brachythecium moss | Brachytheciaceae
|
| BRALO | Brachythecium albicans (Hedw.) Schimp. in B.S.G. var. occidentale Ren. & Card. | Brachythecium albicans | Brachytheciaceae
|
| BRAL70 | Brachythecium albicans (Hedw.) Schimp. in B.S.G. | brachythecium moss | Brachytheciaceae
|
| BRAS2 | Brachythecium asperrimum (Mitt.) Sull. | Brachythecium frigidum | Brachytheciaceae
|
| BRBE3 | Brachythecium beringianum Card. & Th�r. | Brachythecium albicans | Brachytheciaceae
|
| BRBE4 | Brachythecium bestii Grout | Brachythecium reflexum var. pacificum | Brachytheciaceae
|
| BRBI4 | Brachythecium biventrosum (C. M�ll.) Jaeg. | brachythecium moss | Brachytheciaceae
|
| BRBO | Brachythecium bolanderi (Lesq.) Jaeg. | Bolander's brachythecium moss | Brachytheciaceae
|
| BRBR10 | Brachythecium brandegeei (Aust.) Robins. | Cirriphyllum brandegeei | Brachytheciaceae
|
| BRCA70 | Brachythecium calcareum Kindb. | calcareous brachythecium moss | Brachytheciaceae
|
| BRCA18 | Brachythecium campestre (C. M�ll.) Schimp. in B.S.G. | brachythecium moss | Brachytheciaceae
|
| BRCA23 | Brachythecium cavernosum Kindb. | Brachythecium rutabulum | Brachytheciaceae
|
| BRCIC2 | Brachythecium cirrosum (Schwaegr. in Schultes) Schimp. var. coloradense (Aust.) Wijk & Marg. | Cirriphyllum cirrosum | Brachytheciaceae
|
| BRCI8 | Brachythecium cirrosum (Schwaegr. in Schultes) Schimp. | Cirriphyllum cirrosum | Brachytheciaceae
|
| BRCOI | Brachythecium collinum (Schleich. ex C. M�ll.) Schimp. in B.S.G. var. idahense (Ren. & Card.) Grout | Brachythecium velutinum var. velutinum | Brachytheciaceae
|
| BRCO12 | Brachythecium collinum (Schleich. ex C. M�ll.) Schimp. in B.S.G. | brachythecium moss | Brachytheciaceae
|
| BRCU4 | Brachythecium curtum (Lindb.) Limpr. | Brachythecium oedipodium | Brachytheciaceae
|
| BRCY2 | Brachythecium cyrtophyllum Kindb. | Brachythecium acuminatum | Brachytheciaceae
|
| BRDE9 | Brachythecium delicatulum Flow. | delicate brachythecium moss | Brachytheciaceae
|
| BRDI11 | Brachythecium digastrum C. M�ll. & Kindb. in Mac. & Kindb. | brachythecium moss | Brachytheciaceae
|
| BRED | Brachythecium edentatum Williams | Warnstorfia pseudostraminea | Amblystegiaceae
|
| BRERS2 | Brachythecium erythrorrhizon Schimp. in B.S.G. var. suberythrorrhizon (Ren. & Card.) Grout | Brachythecium velutinum var. venustum | Brachytheciaceae
|
| BRER8 | Brachythecium erythrorrhizon Schimp. in B.S.G. | brachythecium moss | Brachytheciaceae
|
| BRFEI | Brachythecium fendleri (Sull.) Jaeg. var. idahense (Ren. & Card.) Wijk & Marg. | Brachythecium velutinum var. velutinum | Brachytheciaceae
|
| BRFE4 | Brachythecium fendleri (Sull.) Jaeg. | Fendler's brachythecium moss | Brachytheciaceae
|
| BRFLH | Brachythecium flagellare (Hedw.) Jenn. var. homomallum (Schimp. in B.S.G.) Jenn. | Brachythecium plumosum | Brachytheciaceae
|
| BRFLP | Brachythecium flagellare (Hedw.) Jenn. var. pringlei (Williams) Grout | Brachythecium plumosum | Brachytheciaceae
|
| BRFLR | Brachythecium flagellare (Hedw.) Jenn. var. roellii (Ren. & Card.) Grout | Brachythecium plumosum | Brachytheciaceae
|
| BRFL5 | Brachythecium flagellare (Hedw.) Jenn. | Brachythecium plumosum | Brachytheciaceae
|
| BRFL6 | Brachythecium flexicaule Ren. & Card. in Grout | Brachythecium calcareum | Brachytheciaceae
|
| BRFR70 | Brachythecium frigidum (C. M�ll.) Besch. | cold brachythecium moss | Brachytheciaceae
|
| BRGE5 | Brachythecium gemmascens C. M�ll. & Kindb. in Mac. & Kindb. | Brachythecium frigidum | Brachytheciaceae
|
| BRGL2 | Brachythecium glaciale Schimp. in B.S.G. | glacier brachythecium moss | Brachytheciaceae
|
| BRGR10 | Brachythecium groenlandicum (C. Jens.) Schljak. | Greenland brachythecium moss | Brachytheciaceae
|
| BRHO4 | Brachythecium holzingeri (Grout) Grout | Holzinger's brachythecium moss | Brachytheciaceae
|
| BRHY3 | Brachythecium hyalotapetum B. Hig. & N. Hig. | brachythecium moss | Brachytheciaceae
|
| BRID3 | Brachythecium idahense Ren. & Card. | Brachythecium velutinum var. velutinum | Brachytheciaceae
|
| BRLA11 | Brachythecium labradoricum (Kindb.) Par. | Brachythecium calcareum | Brachytheciaceae
|
| BRLAG | Brachythecium lamprochryseum C. M�ll. & Kindb. in Mac. & Kindb. var. giganteum Grout | Brachythecium frigidum | Brachytheciaceae
|
| BRLAS | Brachythecium lamprochryseum C. M�ll. & Kindb. in Mac. & Kindb. var. solfatarense Grout | Brachythecium frigidum | Brachytheciaceae
|
| BRLA12 | Brachythecium lamprochryseum C. M�ll. & Kindb. in Mac. & Kindb. | Brachythecium frigidum | Brachytheciaceae
|
| BRLA13 | Brachythecium latifolium Kindb. | Brachythecium nelsonii | Brachytheciaceae
|
| BRLE9 | Brachythecium leibergii Grout | Leiberg's brachythecium moss | Brachytheciaceae
|
| BRMI5 | Brachythecium mildeanum (Schimp.) Schimp. ex Milde | brachythecium moss | Brachytheciaceae
|
| BRNE4 | Brachythecium nelsonii Grout | Nelson's brachythecium moss | Brachytheciaceae
|
| BRNO7 | Brachythecium novae-angliae (Sull. & Lesq. in Sull.) Jaeg. | Bryhnia novae-angliae | Brachytheciaceae
|
| BROE | Brachythecium oedipodium (Mitt.) Jaeg. | brachythecium moss | Brachytheciaceae
|
| BROXD | Brachythecium oxycladon (Brid.) Jaeg. var. dentatum (Lesq. & James) Grout | Brachythecium oxycladon | Brachytheciaceae
|
| BROX2 | Brachythecium oxycladon (Brid.) Jaeg. | brachythecium moss | Brachytheciaceae
|
| BRPE5 | Brachythecium pennellii Bartr. | Leptodictyum riparium | Amblystegiaceae
|
| BRPE6 | Brachythecium petrophilum Williams | Brachythecium velutinum var. venustum | Brachytheciaceae
|
| BRPI9 | Brachythecium piliferum (Hedw.) Kindb. | Cirriphyllum piliferum | Brachytheciaceae
|
| BRPLH | Brachythecium plumosum (Hedw.) Schimp. in B.S.G. var. homomallum Schimp. in B.S.G. | Brachythecium plumosum | Brachytheciaceae
|
| BRPLP | Brachythecium plumosum (Hedw.) Schimp. in B.S.G. var. pringlei (Williams) Grout | Brachythecium plumosum | Brachytheciaceae
|
| BRPLR | Brachythecium plumosum (Hedw.) Schimp. in B.S.G. var. roellii (Ren. & Card.) Grout | Brachythecium plumosum | Brachytheciaceae
|
| BRPL5 | Brachythecium plumosum (Hedw.) Schimp. in B.S.G. | brachythecium moss | Brachytheciaceae
|
| BRPOM | Brachythecium populeum (Hedw.) Schimp. in B.S.G. var. majus Schimp. in B.S.G. | Brachythecium populeum | Brachytheciaceae
|
| BRPOO | Brachythecium populeum (Hedw.) Schimp. in B.S.G. var. ovatum Grout | Brachythecium populeum | Brachytheciaceae
|
| BRPOR | Brachythecium populeum (Hedw.) Schimp. in B.S.G. var. rufescens Schimp. in B.S.G. | Brachythecium populeum | Brachytheciaceae
|
| BRPO4 | Brachythecium populeum (Hedw.) Schimp. in B.S.G. | brachythecium moss | Brachytheciaceae
|
| BRPS6 | Brachythecium pseudocollinum Kindb. in Mac. & Kindb. | Brachythecium salebrosum var. salebrosum | Brachytheciaceae
|
| BRPS7 | Brachythecium pseudostarkei Ren. & Card. | Brachythecium frigidum | Brachytheciaceae
|
| BRREP | Brachythecium reflexum (Starke in Web. & Mohr) Schimp. in B.S.G. var. pacificum Ren. & Card. in R�ll | Pacific brachythecium moss | Brachytheciaceae
|
| BRRER | Brachythecium reflexum (Starke in Web. & Mohr) Schimp. in B.S.G. var. reflexum | brachythecium moss | Brachytheciaceae
|
| BRRE7 | Brachythecium reflexum (Starke in Web. & Mohr) Schimp. in B.S.G. | brachythecium moss | Brachytheciaceae
|
| BRRIC | Brachythecium rivulare Schimp. in B.S.G. var. cataractarum Saut. | Brachythecium rivulare | Brachytheciaceae
|
| BRRIL | Brachythecium rivulare Schimp. in B.S.G. var. lamoillense Grout | Brachythecium rivulare | Brachytheciaceae
|
| BRRIL2 | Brachythecium rivulare Schimp. in B.S.G. var. laxum Grout | Brachythecium rivulare | Brachytheciaceae
|
| BRRIN | Brachythecium rivulare Schimp. in B.S.G. var. noveboracense (Grout) Robins | Brachythecium rivulare | Brachytheciaceae
|
| BRRI5 | Brachythecium rivulare Schimp. in B.S.G. | brachythecium moss | Brachytheciaceae
|
| BRRO5 | Brachythecium rotaeanum De Not. | brachythecium moss | Brachytheciaceae
|
| BRRUF | Brachythecium rutabulum (Hedw.) Schimp. in B.S.G. var. flavescens Schimp. in B.S.G. | Brachythecium rutabulum | Brachytheciaceae
|