GENERIC INDEX. 
Abies, 275, 368, 452, 463, 537, 590. 
Abutilon, 484. 
Abrus, 590. 
Ascarospora, 239. 
Acer, 64. 
Acolium, 238. 
Aconitum, 362. 
Acroscyphus, 238. 
Acrospermum, 325. 
Acrostichium, 258, 
Actinomeris, 212. 
Actinoptychus, 497, 503. 
Actinospermum, 411. 
Actinospora, 563. 
Adiantum, 103, 108, 149, 219, 432, 588. 
Aecidiella, 208, 323. 
Aecidium, 163, 208, 284, 323, 424, 452, 
540, 590. 
Aeschynomene, 152. 
Agave, 166, 274, 537, 590. 
Agrimonia, 565. 
Agropyron, 327. 
Agrostis, 42, 51, 166, 369. 
Agyriella, 470, 539. 
Agyrium, 470. 
Ailanthus, 422. 
Albizzia, 440. 
Alectoria, 239, 341. 
Alisma, 58. 
Allium, 102, 188, 282, 326. 
Allocarya, 58. 
Alnus, 190, 264, 325. 
Alphitonia, 135. 
Alsine, 244, 362. 
Alsodeiopsis, 80, 
Alsophila, 218. 
Alternaria, 254, 325. 
Amblystegium, 215, 538. 
Amblostima, 405. 
Ambrosia, 408. 
Amanita, 137, 326. 
Amerimnon, 266. 
Andina, 539. 
Andromeda, 24, 132, 136. 
Andropogon, 21, 283. 
Androsace, 131. 
Anema, 240. 
Anemone, 50, 175, 211, 212, 352, 417. 
Angelina, 281. 
Aniba, 58. 
Anogra, 273. 
Anomalophyllites, 329. 
Anomodon, 215, 314, 427. 
Anona, 164. 
Antennaria, 299, 454, 455, 542- 
Anthericum, 405. 
Anthocephalus, 539. 
Anthoceros, 322. 
Antigramma, 548. 
Antinocyclus, 498. 
Anzia, 239. 
Apargidium, 343. 
Aplopappus, 344. 
Apospaeria, 287, 463. 
Aquilegia, 245. 
Arabis, 362, 455. 
Arachnodiscus, 498. 
Arbutus, 286, 464. 
Archemora, 478. 
Arctostaphylus, 280. 
Arcyria, 66, 70, 342. 
Arenaria, 244, 274, 332, 343, 362, 586, 
590. 
Arethusa, 552. 
Argemone, 273. 
Argopsis, 239. 
Ariocarpus, 167. 
Aristolochia, 100, 335, 542. 
Armillaria, 140, 326. 
Arnica, 58, 297, 326, 542. 4 
Artemisia, 273, 296, 326, 460, 465, 542. 
Arteranthis, 455- 
Arthonia, 238, 448, 539. 
Arundinaria, 290. 
Arundo, 123, 583. 
Asarum, 334, 528, 529, 542. 
Ascaris, 102. 
Ascidium, 239. 
Asclepias, 156, 306, 474, 456, 457- 
Ascochyta, 289, 464. 
Ascyrum, 24. 
Asimina, 149, 268. — 
