Babingtonia,185Bæckea diosmifolia,183Balsamineæ,359,404,501Balsam, seeImpatiensBamboo, seeBambusaBambusa,307,310,324,365Barbarea,295vulgaris,310,500Barkhausia, taraxacifolia,20Barley, Nepaul,174Bauhinia,328Begoniaceæ,114Begonia,31,81,106,114,162,170,352frigida,199,303,310fuchsioides,281phyllomaniaca,170Bellevalia,408,461,467comosa,348Bellis perennis,17,20,31,106,114,164,244Berberis,272,295,458,460,500vulgaris,20Beta,19,325,365vulgaris,20Betonica Alopecuros,42,44,226Betula alba,66,346,456,472populifolia,66Bidens,114,165,223Bignoniaceæ,222Bignonia,272,296,327Bikkhia,80Blitum,45polymorphum,397,458Bocconia,224cordata,310Bowiea volubilis,409Boraginaceæ,132,138Bouchea hyderabadensis,166Bougainvillea,339Brachythecium plumosum,49Brassica,20,136,139,295,364,367Napus,27,205oleracea,30,33,66,67,106,113,136,141,142,148,250,252,264,271,280,351,408,421,426,442,445,501,508Rapa,181Breynia,198Bromelia,103Bromus velutinus,358Broussonettia papyrifera,331,459Bruniaceæ,80,81Brunia microphylla,81Bryonia,360,367Bryophyllum calycinum,158,171,483proliferum,166Bryum cæspititium,49Bunias,97,136,280,360Bunium creticum,159flexuosum,20Bupleurum,149,459falcatum,15,20Butomaceæ,507Buxbaumia indusiata,49Byrsonima,137Byttneriaceæ,362
C.