Arbutus, 134, 243 
Arceuthobium, 197. 
Arctium. 142, 260. 
Arctomecon, 196 
Arctostaphylos, 19, 31, 104, 274, 335, 349- 
Ardisia, 60. 
Arenaria, 98, 195, 249, 335, 349- 
Argemone, 94, 98. 
Arisema, 318. 
Aristida, 91, 99, 164, 386. 
Aristolochia, 88, 343, 383- 
Armeria, 60. ; 
Armillaria, 25. 
Arnica, 242, 335- 
Aromia, 58. 
Artemisia, 17, 82, 84, 242, 261. 
Arthrophycus, 159. 
Arundinella, 256. 
Asarum, 33, 98, 321. 
Asclepias, 46, 231, 256, 380. 
Ascyrum, 231. 
Asimina, 331. 
Aspergillus, 25 
Asphodeliris, 63. 
_ Aspidium, 65, 182, 246, 344. 
_ Aspidistra, 85 
Asplenium, 90, 134, 140, 256, 340, 350. 
Asprella, 64, 95> 385. 
Aster, 2, 26, 70, 89, 91, 140, at 224, 242, 311, 318, 
395- 
323, 335s 343> 381, 383, 
Asterina, 277. 
Astilbe, 85. 
Astragalus, 44, 572 70, 85, 240, 340. 
Astrophyllum, 318. 
Athenza, 285. 
_ Atrichum, 248. 
Atriplex, 133. 244, 343. - 
Audibertia, 278. 
- Auxemma, 235. 
Avena, 260. 
Axinza, 279. 
Ayenia, 135. 
A ch, 55+ 
Bacillus 214. 
Baccharis, 3. 
Badianifera, 53. 
: ma, 57. - 
Batrachospermum, 119, 289. 
Bauhinia, 135. : 
Bazzania, 198, 246. } 
_ Beccarianthus, 23. 
- Beccariella, 72. 
. ia, 85. 
i Bidens, 151. 
s 57- 
- Bisglaziovia, 23. 
Bispora, 25. 
Blakea, 270. 
Blepharipappus, 276. 
Blepharostoma, 269. 
Blindia, 247, 
Boeehmeria, 68. 
Boerlagea, 23. 
Boisduvallia, 193, 241. 
Bolelia, 234. 
Boletus, 16t. 
Bomarea, 260, 343- 
Borrago, 380. 
Botrychium, 31, 89, 318- 
Botryosporium, 14. 
Bourreria, 61. 
Bouteloua, 192, 304. 
Boykinia, 57, 68, 241. 
Brachelyma, 317. 
Brachyelytrum, 386. 
Brachyhymenium, 70. 
Brachysporium, 198. 
Bradburya. 55. 
Brandegea, 27. 
Brevoortia, 234. 
Breweria, 259, 347- 
Brickellia, 58, 196, 346. 
Brittenia, 23. 
Brittonamra, 55. 
Brodiza, 245. 
Bromelia, 68. 
Brosimum, 30. 
Brossea, 59. 
Brunella, 144, 244. 
Buchloé, 64, 303. 
Buekleya, 62. 
Buda, 54. 
Buddleia, 135, 196. 
Buellia, 250. 
Bulbilis, 64. 
Burrillia, 196, 
Bursa, 54. 
Buthotrephis, 159, 344, 347- 
Bryanthus, 183, 243, 335- 
Bryoziphium, 24, 257. 
Bryum, 70, 100, 247. 
Cacalia, 58. 
Cacara 55. 
Cactus, 57. 
Czoma, 285. 
Cesalpinia, 133, 278, 384. 
Czsalpinioides, 56. 
Calamaria, 65. ; 
magrostis, 164, 386, 
Calamintha, 62. 
Calamites, 159. 
Calamistrum, 65. 
Calandrinia, 26. 
Calceolaria, 54. 
Calea, 151. 
» 89. 
Calliandra, 56, 135. 
Callichroa, 234. 
Callipteridium, 197. 
Jallipteris, 197. 
Callirhoé, 380, 
Brassica, g, 45, 82, 83, 138, 144, 295. 
