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Bixa Orellana L. 226 



Bixineae 226 



Blechnuní occidentale L 526 



Blepharocalvx cisplatensis Gr 306 



— Tweedii Bg 307 



Blumenbachia cernua Gr 314 



— contorta Benth. Hook 314 



— lateritia Benth. Hook 314 



— multifida Hook 314 



Bocconia frutescens L. . 215 



Boehmeria caudata Sw 461 



Boerhavia hirsuta Willd 417 



— panniculata Rich 417 



— pulchella Gr 417 



Bolax Gilliesü Hook 324 



— glebaria Comm 324 



Bombaceae 324 



Borragineae 374 



Borrago officinahs L 375 



Borreria verticillata Mey 334 



Bougainvillea frondosa Gr 418 



— infesta Gr 418 



— praecox Gr 418 



— stipitata Gr 418 



Boussingaultia baselloides Kth ■«i2S, 429 



Bouteloua ciliata Gr 494 



— curtipendula As. Gr 494 



— humilis Hier 495 



— lophostachya Gr 494 



— multiseta Gr 494 



nana Gr 494 



— tennis Gr 494 



— — var. humile Gr 495 



Brassica campestris L 220 



— — var. napo-brassica (D. C.) 220 



_ _ _ oleifera (D. C.) 220 



_ _ _ pabularia (D. C.) 220 



— Napus L 220 



— — b. esculenta (D. C.) 220 



— — a. oleifera (D. C.) 220 



— nigra Kch 220 



— olerácea L 218, 219 



— — var. acephala f. costata (D. C.) . . 219 



— _ _ _ e. palmifolia (D. C.) 219 



— _ — __ c. quercifolia (ü. C.) 219 



