494 



INDEX 



Asplenium, 324 

 Autoecious, 251 

 Autogamy, 383, 439, 446, 454, 470, 



480, 488 

 Azalea, 471, 472 



Bacillus, 155 

 Bacteria, 154, 155 



economic importance of, 157 



exclusion of, 156 



of decay, 157, 158 



of disease, 157, 162 



iron, 161 



nitrifying, 65, 67, 160 



nitrogen fixing, 161 



sulphur, 161 



synthetic, 159 

 Banana, 420 

 Banyan tree, 70 

 Barberry rust, 251 

 Bark, 86, 87 

 Basidial stage, 256 

 Basidiomycetes, 251 

 Basidiospore, 255, 256 

 Basidium, basidia, 251, 263, 255, 258, 



262, 263 



Basswood stem, 100 

 Bean seed, 130, 131 

 Beard, 44 

 Beech, 431, 434 



order, 431 

 Begonia, 2 

 Bellflower, 484 



order, 483 

 Berry, 398 

 Bidens, 488, 490 

 Biennials, 69 

 Bilabiate flowers, 478 

 Birch leaf, 7, 427 



family, 147, 431, 432 

 Black knot, 239, 240 

 Bladderwort, 480 

 Bladderwrack, 206 

 Blade, 7, 8, 21, 27, 426 

 Blakeslee, 227 

 Bleeding, of plants, 61 

 Blood root, 442, 443 

 Blueberry, 471, 472 



Blue green algae, 165 



Body cell, 358, 369, 370 



Bogs, 296, 473 



Boletaceae, 265 



Boletus, 265 



Borages, 476 



Boraginaceae, 475, 476 



Botrychium, 314, 315, 316, 317 



Bower, 326 



Brassica, 445 



Bread making, 20, 250 



Bryales, 301 



Bryophyta, 269 



Buckthorn order, 461 



Buckwheat order, 437 



Buds, 71-75, 73, 362 



adventitious, 75 



axillary, 74 

 Bulbs, 113 

 Buller, 264 



Bunch flower family, 418 

 Bur-marigold, 488, 490 

 Burroughs, 415 

 Buttercup, 438 



order, 438 

 Butternut, 433, 435 

 Butterwort, 480 



Cabbage, 447 

 Cactus, 44 



Calcium cyanamide, 66 

 Callithamnion, 213 

 Callus, 75, 101 

 Calyptra, 294, 299, 305 

 Calyx, 115, 116, 384 

 Cambium, 79, 80, 82. 89, 314 



cylinder, 89, 90, 91, 314, 426 

 Campanula, 484 

 Campanulales, 483 

 Canal cells, 276. 303, 317, 318, 345 

 Canna, 421 



Capillitium, 150, 151, 153 

 Capsule, 277, 305, 306, 307, 326, 414, 



417 

 Carbohydrates, 11,12 



Carbon, 15 



Carbon dioxide, 12, 15, 21, 49, 159 



Carbonic acid, 13 



