Last updated October 1, 2009
| Name | Family | Nativity |
| Baccharis pilularis | Asteraceae | |
| Baccharis pilularis | Asteraceae | N California Coast |
| Baccharis pilularis | Asteraceae | Western US |
| Baccharis pilularis cv. Compacta | Asteraceae | |
| Baccharis pilularis v. consanguinea | Asteraceae | Coastal CA and S Oregon |
| Baccharis salicifolia | Asteraceae | S. America |
| Baccharis viminea | Asteraceae | California |
| Bacopa monnieri | Scrophulariaceae | Pantropical |
| Bambusa bambos | Poaceae | India |
| Bambusa beecheyana | Poaceae | China |
| Bambusa blumeana | Poaceae | India, Indonesia |
| Bambusa dolichomerithalla cv. Green Stripe | Poaceae | |
| Bambusa eutuldoides | Poaceae | China(Hong Kong) |
| Bambusa longispiculata | Poaceae | Burma |
| Bambusa membranacea | Poaceae | China |
| Bambusa nutans | Poaceae | Thailand |
| Bambusa oldhamii | Poaceae | China, Taiwan |
| Bambusa sp. | Poaceae | |
| Bambusa textilis | Poaceae | China |
| Bambusa tulda | Poaceae | SE Asia |
| Bambusa tuldoides | Poaceae | S. China |
| Bambusa ventricosa | Poaceae | China |
| Bambusa vulgaris cv. Vittata | Poaceae | |
| Banksia baueri | Proteaceae | W Australia |
| Banksia integrifolia | Proteaceae | W Australia |
| Banksia littoralis | Proteaceae | W Australia |
| Banksia serrata | Proteaceae | E Australia |
| Barleria obtusa | Acanthaceae | South Africa |
| Barleria repens cv. Rosea | Acanthaceae | |
| Bauhinia corniculata | Caesalpiniaceae | Asia |
| Bauhinia galpinii | Caesalpiniaceae | African Tropics |
| Bauhinia tomentosa | Caesalpiniaceae | South Africa |
| Beaucarnea inermis | Nolinaceae | Mexico |
| Beaucarnea recurvata | Nolinaceae | Mexico |
| Beaucarnea stricta | Nolinaceae | Mexico |
| Beaucarnea stricta | Nolinaceae | S Cen Mexico |
| Beccariophoenix madagascariensis | Arecaceae | Madagascar |
| Begonia acuminata | Begoniaceae | Jamaica |
| Begonia acutifolia | Begoniaceae | Jamaica |
| Begonia albo-picta cv. Rosea | Begoniaceae | |
| Begonia angularis | Begoniaceae | Brazil |
| Begonia angulata | Begoniaceae | Brazil |
| Begonia barkeri | Begoniaceae | Mexico |
| Begonia bufoderma | Begoniaceae | |
| Begonia cardiocarpa | Begoniaceae | Nicaragua |
| Begonia carrieae x Bokit | Begoniaceae | |
| Begonia castaneifolia | Begoniaceae | Brazil |
| Begonia convolvulacea | Begoniaceae | Brazil |
| Begonia cv. Beefsteak | Begoniaceae | |
| Begonia cv. Bird’s Nest | Begoniaceae | |
| Begonia cv. Black Taffeta | Begoniaceae | |
| Begonia cv. Boanza | Begoniaceae | |
| Begonia cv. Boomer | Begoniaceae | |
| Begonia cv. Bronze Twist | Begoniaceae | |
| Begonia cv. Brown Derby | Begoniaceae | |
| Begonia cv. Carnivale | Begoniaceae | |
| Begonia cv. Carousel | Begoniaceae | |
| Begonia cv. Castaway | Begoniaceae | |
| Begonia cv. Catalina | Begoniaceae | |
| Begonia cv. Cathedral | Begoniaceae | |
| Begonia cv. Chiba | Begoniaceae | |
| Begonia cv. Cimarron | Begoniaceae | |
| Begonia cv. Cleopatra | Begoniaceae | |
| Begonia cv. Coastal Queen | Begoniaceae | |
| Begonia cv. Colonel Gale | Begoniaceae | |
| Begonia cv. Comedian | Begoniaceae | |
| Begonia cv. Corralina de Lucerna | Begoniaceae | |
| Begonia cv. Crestabruchii | Begoniaceae | |
| Begonia cv. Daisy | Begoniaceae | |
| Begonia cv. Darlene Fuentes | Begoniaceae | |
| Begonia cv. Decker’s Select | Begoniaceae | |
| Begonia cv. Dragon Wings | Begoniaceae | |
| Begonia cv. Dwarf Richmondensis | Begoniaceae | |
| Begonia cv. Emerald Glow | Begoniaceae | |
| Begonia cv. Emerald Splendor | Begoniaceae | |
| Begonia cv. Essie Hunt | Begoniaceae | |
| Begonia cv. Eunice Gray | Begoniaceae | |
| Begonia cv. Euphrates | Begoniaceae | |
| Begonia cv. Fiji Island | Begoniaceae | |
| Begonia cv. Flamingo | Begoniaceae | |
| Begonia cv. Floribunda Rosea | Begoniaceae | |
| Begonia cv. Foster Park | Begoniaceae | |
| Begonia cv. Freda’s Folly | Begoniaceae | |
| Begonia cv. Freddy | Begoniaceae | |
| Begonia cv. Gartersnake | Begoniaceae | |
| Begonia cv. Gene Daniels | Begoniaceae | |
| Begonia cv. Ginny | Begoniaceae | |
| Begonia cv. Great Gatsby | Begoniaceae | |
| Begonia cv. Gypsy Maiden | Begoniaceae | |
| Begonia cv. Hattie Wordon | Begoniaceae | |
| Begonia cv. Hieroglyphics | Begoniaceae | |
| Begonia cv. Holly’s Rhyme | Begoniaceae | |
| Begonia cv. Inland Empire | Begoniaceae | |
| Begonia cv. Irene Nuss | Begoniaceae | |
| Begonia cv. J-11 | Begoniaceae | |
| Begonia cv. Jeanne Jones | Begoniaceae | |
| Begonia cv. Joe Hayden | Begoniaceae | |
| Begonia cv. King Cobra | Begoniaceae | |
| Begonia cv. Kit Kat | Begoniaceae | |
| Begonia cv. Lady Clare | Begoniaceae | |
| Begonia cv. Lady McEldery | Begoniaceae | |
| Begonia cv. Little Brother Montgomery | Begoniaceae | |
| Begonia cv. Little Miss Mummey | Begoniaceae | |
| Begonia cv. Lomita Lady | Begoniaceae | |
| Begonia cv. Lotusland | Begoniaceae | |
| Begonia cv. Madame Queen | Begoniaceae | |
| Begonia cv. Magdaline Madsen | Begoniaceae | |
| Begonia cv. Maribel Pink Shades | Begoniaceae | |
| Begonia cv. Marmaduke | Begoniaceae | |
| Begonia cv. Medora | Begoniaceae | |
| Begonia cv. Mrs. Fickworth | Begoniaceae | |
| Begonia cv. Mrs. Fred Scripps | Begoniaceae | |
| Begonia cv. Muddy Waters | Begoniaceae | |
| Begonia cv. Night Crossing | Begoniaceae | |
| Begonia cv. Nora Bedson | Begoniaceae | |
| Begonia cv. Olympic Queen | Begoniaceae | |
| Begonia cv. Pastel Princess | Begoniaceae | |
| Begonia cv. Patriot Games | Begoniaceae | |
| Begonia cv. Paul Hernandez | Begoniaceae | |
| Begonia cv. Pinafore | Begoniaceae | |
| Begonia cv. Pink Cane | Begoniaceae | |
| Begonia cv. Pink Taffeta | Begoniaceae | |
| Begonia cv. Porterville | Begoniaceae | |
| Begonia cv. Ramirez | Begoniaceae | |
| Begonia cv. Raspberry Moon | Begoniaceae | |
| Begonia cv. Richmondensis | Begoniaceae | |
| Begonia cv. Rip Van Winkle | Begoniaceae | |
| Begonia cv. River Nile | Begoniaceae | |
| Begonia cv. Robert Shatzer | Begoniaceae | |
| Begonia cv. Rogue | Begoniaceae | |
| Begonia cv. Rudy’s Luxuriens | Begoniaceae | |
| Begonia cv. Sharon Seele | Begoniaceae | |
| Begonia cv. Shelley Andros | Begoniaceae | |
| Begonia cv. Sophie Cecile | Begoniaceae | |
| Begonia cv. Southampton | Begoniaceae | |
| Begonia cv. Steve Tapia | Begoniaceae | |
| Begonia cv. Sweet Magic | Begoniaceae | |
| Begonia cv. Swordfighter x carolineifolia | Begoniaceae | |
| Begonia cv. Sylvan Triumph | Begoniaceae | |
| Begonia cv. Thurstonii | Begoniaceae | |
| Begonia cv. Tom’s Fantasy | Begoniaceae | |
| Begonia cv. Trickster | Begoniaceae | |
| Begonia cv. Turk Murphy | Begoniaceae | |
| Begonia cv. Unconventional | Begoniaceae | |
| Begonia cv. Viaudii | Begoniaceae | |
| Begonia cv. White Sabers | Begoniaceae | |
| Begonia cv. Yanonali | Begoniaceae | |
| Begonia cv. Zuensis | Begoniaceae | |
| Begonia domingensis | Begoniaceae | Caribbean |
| Begonia echinosepala | Begoniaceae | Brazil |
| Begonia foliosa | Begoniaceae | Colombia, Venezuela, Ecuador |
| Begonia foliosa v. miniata | Begoniaceae | Venezuela |
| Begonia fuchsioides | Begoniaceae | Venezuela |
| Begonia gehrtii | Begoniaceae | Brazil |
| Begonia hybrid | Begoniaceae | |
| Begonia hydrocotylifolia | Begoniaceae | Mexico |
| Begonia johnstonii | Begoniaceae | East Tropical Africa |
| Begonia luxurians | Begoniaceae | Brazil |
| Begonia manicata v. aureo-maculata | Begoniaceae | Mexico |
| Begonia megaphylla | Begoniaceae | Mexico |
| Begonia parilis | Begoniaceae | Brazil |
| Begonia peltata | Begoniaceae | Mexico & C. America |
| Begonia sp. | Begoniaceae | |
| Begonia tomentosa | Begoniaceae | Brazil |
| Begonia vitafolia | Begoniaceae | Brazil |
| Begonia x erythrophylla | Begoniaceae | Hort. Origin |
| Begonia x erythrophyllum | Begoniaceae | |
| Begonia x ricinifolia | Begoniaceae | |
| Begonia x semperflorens | Begoniaceae | |
| Bellis perennis | Asteraceae | Europe, Mediterranean |
| Bergenia crassifolia | Saxifragaceae | Siberia, Mongolia |
| Bergeranthus jamesii | Aizoaceae | South Africa(E. Cape Province) |
| Bergerocactus emoryi | Cactaceae | SW California, Mexico |
| Beschorneria albiflora | Agavaceae | S. Mexico, Guatemala |
| Beschorneria cv. Ding Dong seedlings | Agavaceae | |
| Beschorneria rigida | Agavaceae | Central Mexico |
| Beschorneria sp. | Agavaceae | |
| Beschorneria yuccoides | Agavaceae | Mexico |
| Beschorneria yuccoides ssp. yuccoides | Agavaceae | Mexico |
| Bidens cv. Madame Ganna Walska | Asteraceae | |
| Bidens nudata | Asteraceae | Mexico(Baja California) |
| Billbergia brasiliensis | Bromeliaceae | Brazil |
| Billbergia cv. Fantasia | Bromeliaceae | |
| Billbergia cv. Muriel Waterman | Bromeliaceae | |
| Billbergia cv. Pink Fantasia | Bromeliaceae | |
| Billbergia cv. Santa Barbara | Bromeliaceae | |
| Billbergia elegans hybrid | Bromeliaceae | |
| Billbergia nutans | Bromeliaceae | Argentina, Brazil, Uruguay |
| Billbergia pyramidalis cv. Kyoto | Bromeliaceae | |
| Billbergia pyramidalis v. pyramidalis | Bromeliaceae | Brazil |
| Billbergia pyramidalis v. striata | Bromeliaceae | S Brazil |
| Billbergia sanderiana | Bromeliaceae | Brazil |
| Billbergia saundersii | Bromeliaceae | Brazil |
| Billbergia sp. | Bromeliaceae | |
| Billbergia venezuelana | Bromeliaceae | Venezuela |
| Billbergia vittata cv. Exotica | Bromeliaceae | |
| Blechnum cordatum | Blechnaceae | Chile, Argentina |
| Blechnum gibbum cv. Silver Lady | Blechnaceae | |
| Blechnum gracile | Blechnaceae | Tropical America |
| Blechnum moorei | Blechnaceae | South Pacific |
| Blechnum occidentale | Blechnaceae | S. America, Mexico & W. Indies |
| Blechnum sp. | Blechnaceae | |
| Bobgunnia madagascariensis | Papilionaceae | Africa |
| Bolivicereus margaritanus | Cactaceae | |
| Boltonia asteroides | Asteraceae | E United States |
| Boophane disticha | Amaryllidaceae | |
| Borzicactus sp. | Cactaceae | |
| Boswellia nana | Burseraceae | Yemen(Socotra) |
| Boswellia serrata | Burseraceae | India |
| Bowenia spectabilis | Stangeriaceae | NE Australia |
| Bowiea volubilis | Hyacinthaceae | South Africa |
| Brachychiton acerifolius | Sterculiaceae | E Australia |
| Brachychiton australis | Sterculiaceae | Australia |
| Brachychiton bidwillii | Sterculiaceae | Australia(Queensland) |
| Brachychiton discolor | Sterculiaceae | E Australia |
| Brachychiton populneus | Sterculiaceae | Australia |
| Brachychiton rupestris | Sterculiaceae | Australia |
| Brachychiton rupestris | Sterculiaceae | Australia(Queensland) |
| Brachychiton x hybridus | Sterculiaceae | Australia(Queensland) |
| Brachysema praemorsum cv. Bronze Butterfly | Fabaceae | |
| Brahea aculeata | Arecaceae | S U.S., Mexico |
| Brahea armata | Arecaceae | Baja California |
| Brahea brandegeei | Arecaceae | Baja California |
| Brahea clara | Arecaceae | Baja California |
| Brahea edulis | Arecaceae | Mexico(Guadelupe Is.) |
| Brahea elegans | Arecaceae | Mexico(Sonora) |
| Brahea nitida | Arecaceae | Mexico |
| Brahea sp. | Arecaceae | |
| Brahea sp. | Arecaceae | Mexico |
| Brasiliopuntia sp. | Cactaceae | South America |
| Brassocattleya lindleyi | Orchidaceae | |
| Brighamia insignis | Campanulaceae | Hawaii |
| Brighamia insignis cv. Kirsten | Campanulaceae | Hawaii |
| Brighamia rockii | Campanulaceae | Hawaii(Molokai) |
| Bromelia balansae | Bromeliaceae | South America |
| Bromelia horstii | Bromeliaceae | Brazil |
| Bromelia pinguin cv. Variegata | Bromeliaceae | |
| Bromeliad hybrid | Bromeliaceae | |
| Broussonetia papyrifera | Moraceae | E Asia to Polynesia |
| Browningia caineana | Cactaceae | Bolivia |
| Browningia candelaris | Cactaceae | Peru |
| Browningia chlorocarpa | Cactaceae | N Peru |
| Browningia hertlingiana | Cactaceae | Peru |
| Browningia sp. | Cactaceae | |
| Browningia viridis | Cactaceae | Peru |
| Brugmansia sanguinea | Solanaceae | NC Colombia to Chile |
| Brugmansia sp. | Solanaceae | |
| Brugmansia versicolor | Solanaceae | Ecuador |
| Brugmansia x candida | Solanaceae | Ecuador |
| Brugmansia x insignis | Solanaceae | |
| Brunfelsia jamaicensis | Solanaceae | Jamaica |
| Brunfelsia lactea | Solanaceae | Puerto Rico |
| Brunfelsia pauciflora v. calycina | Solanaceae | |
| Buddleja davidii cultivars | Buddlejaceae | |
| Buddleja diversiloba | Buddlejaceae | |
| Bulbine alooides | Asphodelaceae | South Africa |
| Bulbine frutescens cv. | Asphodelaceae | |
| Bulbine frutescens cv. Hallmark | Asphodelaceae | |
| Bulbine natalensis | Asphodelaceae | South Africa |
| Bursera cuneata | Burseraceae | Mexico(Jalisco, Oaxaca) |
| Bursera fagaroides v. fagaroides | Burseraceae | Mexico |
| Bursera filicifolia | Burseraceae | Baja California |
| Bursera glabrifolia | Burseraceae | Mexico(Jalisco, Oaxaca) |
| Bursera grandifolia | Burseraceae | Mexico |
| Bursera sp. | Burseraceae | |
| Bursera tenuifolia | Burseraceae | South America |
| Butia capitata | Arecaceae | Brazil, Uruguay, Argentina |
| Butia paraguenses | Arecaceae | South America |
| Butia sp. | Arecaceae | |
| Buxus microphylla | Buxaceae | |
| Buxus microphylla v. insularis cv. Winter Gem | Buxaceae | |
| Buxus sp. | Buxaceae |
