B. abbreviata

B. acclivis

B. ‘Ace High’

B. ‘Acuma Tuttie’

B. aeranthos

B. ‘Alba scandens’

B. ‘Alice's White Rabbit’

B. ‘Allegany’

See B. ‘Encanto # 14’

B. ‘Alma Rose’

B. ‘Amnesia’

B. ‘Andy's Emerald’

B. ‘Angel Glow’

B. ankaranensis

B. ‘Ann Stevenson’

B. ‘Annan Angel’

B. ‘Annan Blossom’

B. ‘Annan Essence’

B. antaisaka

B. ‘Antoon’s Butterfly’

B. ‘April Showers’

B. aptera subsp. aptera

B. archboldiana

B. ‘Argyrea Xanthina’

B. ‘Art Deco’

B. ‘Aurora’

B. ‘Babywing Series’

B. ‘Barbara Mott’

B. barborkae

B. ‘Barry Mack’

B. ‘Beaucoup Red’

B. ‘Beaucoup White’

B. bekopakensis

B. bhutanensis

B. ‘Bill Byron’

B. ‘Bird's Nest’

B. ‘Black Carter’

B. ‘Black Chamois’

B. ‘Blizzard’

B. ‘Blueberry Sorbet’

B. ‘Bluewind’

B. ‘Boko’

B. ‘Bold as Brass’

B. boliviensis var. boliviensis

B. ‘Bonfire Scarlet’

B. ‘Brad Thompson’

B. ‘Bradley T’

B. ‘Bulls Eye’

B. ‘Bunchii’

See B. ‘Erythrophylla Bunchii’

B. ‘Burgundy Fred’

B. ‘Caina’

B. calliantha

B. ‘Camouflage’

B. ‘Candy Mint’

B. caobangensis

B. ‘Caqul?’

B. ‘Careless Whisper’

B. ‘Caribbean Waves’

B. ‘Caribbean Wind’

B. ‘Carmel Browne’

B. ‘Carol Pease’

B. ‘Catherine Jane’

B. ‘Cecil-Lie’

B. ‘Cerely Abgel’

B. ‘Chamelion’s Way’

B. ‘Charles Meyer’

B. ‘Checkered Past’

B. ‘Cheryl Lenert’

B. ‘Chissom’

B. ‘Chocolate Chip’

B. ‘Chocolate Pink’

B. ‘Chumash’s Sister’

B. circularis

B. cleopatrae

B. ‘coccinea? ’

B. ‘Colonel Fearing’

B. comestibilis

B. ‘Concha’

B. ‘Confetti’

B. ‘Connie Marble’

B. ‘Constellation’