| Symbol | Scientific name | Common name/Accepted name (for synonyms) | Family |
| BRLA5 | Brunfelsia lactea Krug & Urban | vega blanca | Solanaceae
|
| BRNI6 | Brunfelsia nitida Benth. | | Solanaceae
|
| BRPAC | Brunfelsia pauciflora (Cham. & Schltdl.) Benth. var. calycina (Benth.) J. A. Schmidt | | Solanaceae
|
| BRPA17 | Brunfelsia pauciflora (Cham. & Schltdl.) Benth. | | Solanaceae
|
| BRPO3 | Brunfelsia portoricensis Krug & Urban | Puerto Rico raintree | Solanaceae
|
| BRUN2 | Brunfelsia undulata auct. non Sw. | Brunfelsia americana | Solanaceae
|
| BRUN4 | Brunfelsia uniflora (Pohl) D. Don | manaca | Solanaceae
|
| BRUNF2 | Brunfelsia L. | raintree | Solanaceae
|
| BRCO10 | Bruniera columbiana (Karst.) Nieuwl. | Wolffia columbiana | Lemnaceae
|
| BRPU14 | Bruniera punctata (Griseb.) Nieuwl. | Wolffia brasiliensis | Lemnaceae
|
| BRMA11 | Brunnera macrophylla (Bieb.) I.M. Johnston | largeleaf brunnera | Boraginaceae
|
| BRUNN2 | Brunnera C. Steven | brunnera | Boraginaceae
|
| BRCI3 | Brunnichia cirrhosa Gaertn. | Brunnichia ovata | Polygonaceae
|
| BROV4 | Brunnichia ovata (Walt.) Shinners | American buckwheat vine | Polygonaceae
|
| BRUNN | Brunnichia Banks ex Gaertn. | buckwheat vine | Polygonaceae
|
| BREB | Brya ebenus (L.) DC. | ebony coccuswood | Fabaceae
|
| BRYA | Brya P. Br. | coccuswood | Fabaceae
|
| BRBO4 | Bryhnia bolanderi (Lesq.) Broth. | Brachythecium bolanderi | Brachytheciaceae
|
| BRBR11 | Bryhnia brittoniae (Grout) Robins. | Eurhynchium praelongum | Brachytheciaceae
|
| BRGRH | Bryhnia graminicolor (Brid.) Grout var. holzingeri (Ren. & Card.) Grout | Bryhnia graminicolor | Brachytheciaceae
|
| BRGR11 | Bryhnia graminicolor (Brid.) Grout | bryhnia moss | Brachytheciaceae
|
| BRHU5 | Bryhnia hultenii Bartr. in Grout | Hulten's bryhnia moss | Brachytheciaceae
|
| BRNOF | Bryhnia novae-angliae (Sull. & Lesq. in Sull.) Grout var. fontinalis Grout | Bryhnia novae-angliae | Brachytheciaceae
|
| BRNO4 | Bryhnia novae-angliae (Sull. & Lesq. in Sull.) Grout | New England bryhnia moss | Brachytheciaceae
|
| BROR7 | Bryhnia oregana (Sull.) Robins. | Eurhynchium oreganum | Brachytheciaceae
|
| BRST7 | Bryhnia stokesii (Turn.) Robins. | Eurhynchium praelongum | Brachytheciaceae
|
| BRYHN | Bryhnia Kaur. | bryhnia moss | Brachytheciaceae
|
| BRIL | Bryoandersonia illecebra (Hedw.) Robins. | bryoandersonia moss | Brachytheciaceae
|
| BRYOA | Bryoandersonia Robins. | bryoandersonia moss | Brachytheciaceae
|
| BRLO3 | Bryobrittonia longipes (Williams) Horton | bryobrittonia moss | Encalyptaceae
|
| BRPE7 | Bryobrittonia pellucida Williams | Bryobrittonia longipes | Encalyptaceae
|
| BRYOB | Bryobrittonia Williams | bryobrittonia moss | Encalyptaceae
|
| BRDI60 | Bryocaulon divergens (Ach.) Karnefelt | | Parmeliaceae
|
| BRPS3 | Bryocaulon pseudosatoanum (Asah.) Karnefelt | | Parmeliaceae
|
| BRYOC2 | Bryocaulon Karnefelt | bryocaulon | Parmeliaceae
|
| BRVE6 | Bryocles ventricosa Salisb. | Hosta ventricosa | Liliaceae
|
| BRAN8 | Bryocrumia andersonii (Bartr.) Anderson | Bryocrumia vivicolor | Hypnaceae
|
| BRVI6 | Bryocrumia vivicolor (Dix.) Buck | bryocrumia moss | Hypnaceae
|
| BRYOC3 | Bryocrumia Anderson | bryocrumia moss | Hypnaceae
|
| BRAL10 | Bryoerythrophyllum alpigenum (Vent.) Chen | Bryoerythrophyllum recurvirostre | Pottiaceae
|
| BRCO13 | Bryoerythrophyllum columbianum (Herm. & Lawt.) Zand. | Columbian bryoerythrophyllum moss | Pottiaceae
|
| BRFE5 | Bryoerythrophyllum ferruginascens (Stirt.) Giac. | bryoerythrophyllum moss | Pottiaceae
|
| BRIN10 | Bryoerythrophyllum inaequalifolium (Tayl.) Zand. | unequal leaf bryoerythrophyllum moss | Pottiaceae
|
| BRRE6 | Bryoerythrophyllum recurvifolium (Tayl.) Zand. | Paraleptodontium recurvifolium | Pottiaceae
|
| BRRED | Bryoerythrophyllum recurvirostre (Hedw.) Chen var. dentatum (Schimp.) Crum et al. | Bryoerythrophyllum recurvirostre | Pottiaceae
|
| BRRE70 | Bryoerythrophyllum recurvirostre (Hedw.) Chen | bryoerythrophyllum moss | Pottiaceae
|
| BRRE4 | Bryoerythrophyllum recurvum (Griff.) Saito | recurved bryoerythrophyllum moss | Pottiaceae
|
| BRYOE2 | Bryoerythrophyllum Chen | bryoerythrophyllum moss | Pottiaceae
|
| BRAN7 | Bryohaplocladium angustifolium (Hampe & C. M�ll.) Wat. & Iwats. | bryohaplocladium moss | Leskeaceae
|
| BRMI9 | Bryohaplocladium microphyllum (Hedw.) Wat. & Iwats. | bryohaplocladium moss | Leskeaceae
|
| BRPR3 | Bryohaplocladium praelongum (Schimp. ex Besch.) Crum | Rauiella praelonga | Thuidiaceae
|
| BRVI7 | Bryohaplocladium virginianum (Brid.) Wat. & Iwats. | Virginia bryohaplocladium moss | Leskeaceae
|
| BRYOH | Bryohaplocladium Wat. & Iwats. | bryohaplocladium moss | Leskeaceae
|
| BRVA2 | Bryolawtonia vancouveriensis (Kindb. in Mac.) Enroth & Norris | Porotrichum vancouveriense | Thamnobryaceae
|
| BRAL4 | Bryonia alba L. | white bryony | Cucurbitaceae
|
| BRCRD | Bryonia cretica L. ssp. dioica (Jacq.) Tutin | Cretan bryony | Cucurbitaceae
|
| BRCR2 | Bryonia cretica L. | Cretan bryony | Cucurbitaceae
|
| BRDI5 | Bryonia dioica Jacq. | Bryonia cretica ssp. dioica | Cucurbitaceae
|
| BRGR8 | Bryonia grandis L. | Coccinia grandis | Cucurbitaceae
|
| BRYON | Bryonia L. | bryony | Cucurbitaceae
|
| BRCA13 | Bryonora castanea (Hepp) Poelt | | Lecanoraceae
|
| BRCU2 | Bryonora curvescens (Mudd) Poelt | | Lecanoraceae
|
| BRPR4 | Bryonora pruinosa (Th. Fr.) Holtan-Hartwig | | Lecanoraceae
|
| BRSE9 | Bryonora septentrionalis Holtan-Hartwig | | Lecanoraceae
|
| BRYON2 | Bryonora Poelt | bryonora | Lecanoraceae
|
| BRDA | Bryophyllum daigremontianum (Hamet & Perrier) Berger | Kalanchoe daigremontiana | Crassulaceae
|
| BRFE7 | Bryophyllum fedtschenkoi (Hamet & Perrier) hort. | Kalanchoe fedtschenkoi | Crassulaceae
|
| BRPI6 | Bryophyllum pinnatum (Lam.) Oken | Kalanchoe pinnata | Crassulaceae
|
| BRTU | Bryophyllum tubiflorum Harvey | Kalanchoe delagoensis | Crassulaceae
|
| BRNE3 | Bryopogon negativus Gyelnik | Bryoria lanestris | Parmeliaceae
|
| BRPA12 | Bryopogon pacificus Gyelnik | Bryoria fuscescens | Parmeliaceae
|
| BRAB | Bryoria abbreviata (Mull. Arg.) Brodo & D. Hawksw. | Nodobryoria abbreviata | Parmeliaceae
|
| BRBI60 | Bryoria bicolor (Ehrh.) Brodo & D. Hawksw. | twocolor horsehair lichen | Parmeliaceae
|
| BRCA14 | Bryoria capillaris (Ach.) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRCA15 | Bryoria carlottae Brodo & D. Hawksw. | Carlott's horsehair lichen | Parmeliaceae
|
| BRCE | Bryoria cervinula Mot. ex Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRCH60 | Bryoria chalybeiformis (L.) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRFR60 | Bryoria fremontii (Tuck.) Brodo & D. Hawksw. | Fremont's horsehair lichen | Parmeliaceae
|
| BRFR6 | Bryoria friabilis Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRFU3 | Bryoria furcellata (Fr.) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRFU60 | Bryoria fuscescens (Gyelnik) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRGL3 | Bryoria glabra (Mot.) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRIM | Bryoria implexa (Hoffm.) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRLA60 | Bryoria lanestris (Ach.) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRNA60 | Bryoria nadvornikiana (Gyelnik) Brodo & D. Hawksw. | Nadvornik's horsehair lichen | Parmeliaceae
|
| BRNI60 | Bryoria nitidula (Th. Fr.) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BROR6 | Bryoria oregana (Tuck. ex Willey) Brodo & D. Hawksw. | Nodobryoria oregana | Parmeliaceae
|
| BRPI8 | Bryoria pikei Brodo & D. Hawksw. | Pike's horsehair lichen | Parmeliaceae
|
| BRPS4 | Bryoria pseudocapillaris Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRPS60 | Bryoria pseudofuscescens (Gyelnik) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRSA2 | Bryoria salazinica Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRSI60 | Bryoria simplicior (Vainio) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRSP5 | Bryoria spiralifera Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRSU6 | Bryoria subcana (Nyl. ex Stizenb.) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRSU7 | Bryoria subdivergens (E. Dahl) Brodo & D. Hawksw. | Nodobryoria subdivergens | Parmeliaceae
|
| BRTE60 | Bryoria tenuis (E. Dahl) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRTO2 | Bryoria tortuosa (G. Merr.) Brodo & D. Hawksw. | tortured horsehair lichen | Parmeliaceae
|
| BRTRA | Bryoria trichodes (Michaux) Brodo & D. Hawksw. ssp. americana (Mot.) Brodo & D. Hawksw. | American horsehair lichen | Parmeliaceae
|
| BRTRT | Bryoria trichodes (Michaux) Brodo & D. Hawksw. ssp. trichodes | horsehair lichen | Parmeliaceae
|
| BRTR10 | Bryoria trichodes (Michaux) Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|
| BRYOR2 | Bryoria Brodo & D. Hawksw. | horsehair lichen | Parmeliaceae
|