INDEX 



475 



(Numbers refer to pages.) 



Bipalmate, 95. 



Bipinnate, 95. 



Birch, catkins of, 157, ; leaves, 121. 

 Birds, carry seeds, 338; pollination 

 by, 245. 



Birthwort family, 212. 



Biserial flower, 139. 



Biternate, 89, 95. 



Blackberries, dispersion, 338; habits, 

 390; fruit, 255, 274, 304; inflores- 

 cence, 197; leaf, 78; phenology, 417; 

 scrambling, 401; shoots, 55. 



Blackbirds, 171. 



Black currant, twigs, 365, 181. 



Black-rot. 352. 



Black walnut, fruit, 285; twigs, 39. 



Blade of leaf, 80. 



Bleeding-heart, 90; duration of, 386 

 388; flower, 214. 



Blight, 352. . 



Blood-root, rhizome, 362. 



Blooming, dates of, 414. 



Blue-beech, catkin, 158. 



Bluebells, renewing, 388. 



Blue cohosh, 278. 



Blue-flag, flower, 152, 187; fruit, 265; 

 rhizome, 362. 



Boards, knots in, 23. 



Boll of cotton, 265. 



Boneset, 183. 



Borage, inflorescence, 195. 



Borers, 21. 



Boston ivy, 87, 400. 



Botanizing, 440, 443. 



Bouvardias, 222. 



Box-elder, fruit, 271. 



Boxes for seeds, 330. 



Books, 446. 



Brace roots, 374. 



Bracts, 97. 



Branch, 3. 



Bread mold, 351. 



Breeding of plants, 418. 



Brick or spawn, 350. 



Britton, book by, 443. 



Brugmansia, double, 206; fruit, 275. 



Bryophyllum, 375. 



Bryophytes, 352. 



Buckwheat, 240; inflorescence, 193; 



leaf, 112; seed, 334. 

 Bud-scales, 50. 

 Buds and bulbs, 353, 357. 

 Bulblets, 353. 

 Bulbous plants, 327, 353. 

 Bulbs, 353 ; perpetuation by, 387; 



scales growing, 375. 

 Bulbs vs. buds, 357. 

 Bullrush, 226. 



Bull-thistle, duration of, 386. 

 Bumble-bees, 238. 

 Burdock, 182, 183 ; dissemination, 338 ; 



fruit, 280, 305. 

 Bushes, 10, 390. 

 Butcher's broom, 104. 

 Buttercup, flower, 152, 238. [39. 



Butternut, fruit, 285; leaf, 92; twigs. 

 Buttons of mushroom, 349. 

 Buttonwood, 40, 161. 



Cabbage, head, 356; fruit, 262. 



Cacti, 364; classification, 326; move- 

 ment in, 406. 



Calanthe, 226. 



Calcium, 422. 



California poppy, 403. 



Calla, flower, 168. 



Calliopsis, 179. 



Calyptra, 347. 



Calyptrate buds, 40. 



Calyx, 135. 



Campanulate corolla, 185. 



Canada thistle, leaf, 86; spread of, 

 361, 367. 



Canes, 390. 



