568 
Antheridium, 322, 326, 328, 410, 312*, 
316*, 333%, 411*, 419*, 432*. 
Anthoceros, 416, 416*. 
Anthocerotales, 407. 
Anthocyan, 284. 
Antitoxins, 123. 
Apetalae, 473. 
Apetalous flower, 13, 11*. 
Apical meristem, 126*, 183*. 
Apophysis, 422. 
Apothecium, 366, 367*, 382*. 
Apple, flower, 13*; cyme, 31*; apple 
pollen, 50; type of fruit, 78; sec- 
tion of twig, 199*. 
Apple Blotch, 404. 
Apple Rust, 401, 400*, 403*. 
Apple Scab, 378. 
Archegonia, 409, 410*, 419*, 432%, 
449*. 
Archichlamydeae, 
families, 473. 
Arctium Lappa, fruits, 86* 
Arginin, 281. 
Aril, 56, 57*. 
Arisaema triphyllum, 26*. 
Arrangements, of leaves, 238. 
Ascus, 364, 368*, 382*. 
Ascocarp, 365. 
Ascogenous hyphae, 368, 376, 367*. 
Ascogonium, 368. 
Ascomycetes, 353, 363. 
Ascospore, 364, 366*. 
Asparagus, 160, 271. 
Asparagus Rust, 403. 
Aspergillus, 375, 375*. 
Associated plants and animals, 503. 
Atropine, 283. 
Auricles, 235. 
Auxanometer, 215, 216*. 
Auxograph, 215. 
Auxospore, 332. 
Available water, 160. 
Awn, 22. 
described, 472; 
Bacillus subtilis, 343* 
Bacteria, 155, 156, 289, 336, 157*; 
described, 341; coccus forms, 
341, 342*; bacillus forms, 341, 
INDEX 
342*; spirillum forms, 341, 342*; 
reproduction, 343; of decay, 344; 
of fermentation, 345, 345*; of 
nitrification, 345, 346*; patho- 
genic, 346, 347*. 
Balm of Gilead, 474. 
Banner, 24. 
Barberry, 396, 399*. 
Bark, 127; described, 199. 
Basidium, 382, 386* 
Basidiomycetes, 352; described, 382. 
Basidiospore, 383, 386*, 399*. 
Basswood, flower, 10*; fruits, 83*. 
Bast fibers, 115, 129, 129*, 193*, 196*, 
198* 
Bean, family, 23; seed, 56*, 57*; type 
of seeds, 58; seedling, 106*; type 
of seedling, 107. 
Beech and Oak family, 476; flowers, 
476*. 
Beggar-ticks, fruits, 86*. 
Berberis vulgaris, 396, 399*. 
Berry, 77, 77*. 
Betulaceae, 475. 
Bidens, fruit, 86*. 
Biennial, 171. 
Bindweeds, 489*; described, 490. 
Biometry, 538. 
Birch family, 475; flowers, 475*. 
Bird’s nest Fungus, described, 391, 
392*. 
Bitter Rot of Apples, 378, 379*. 
Blackberry, fruit, 79. 
Black Fungi, 369. 
Black Knot, 222; described, 369, 370*- 
Black leg, 348. 
Black oak, section of stem, 200*. 
Biack-rot of cabbage, 347. 
Black-rot of Grapes, 378. 
Black-rot of Sweet Potato, 404. 
Black Rust of grain, described, 396, 
397*, 398*, 399*. 
Black Walnut, 474. 
Bladder Plums, 377. 
Blade of leaf, 234; described, 235: 
236*, 237". 
Bleeding of plants, 161. 
Blister Rust of Pines, described, 402, 
