INDEX 
(The numbers, unless otherwise designated, refer to paragraphs.) 
Aborted, 220, 291. 
Absorption, 58, 71, 72; Exp. 39. 
selective, 60. 
Accessory buds, 158. 
Accessory fruits, 302. 
Adaptation, 206, 237. 
Adhesive fruits, 20; Exp. 20. 
Adjustment of leaves, 196-202. 
Adnate, 374. 
Adventitious buds, 65, 158. 
Adventitious roots, 37, 83. 
Aicidium, 362. 
Aération, 319. 
Aérial roots, 88. 
Aggregate fruits, 301, 303. 
Air space, 114, 116, 184. 
Akene, 234, 296, 302, 305. 
Albumin, 3. 
Albuminous, 56. 
Albuminous seed, ¢.e., containing endo- 
sperm; Field work, p. 28. 
Aleurone, 3. 
Algze, 333, 336-342. 
Alternate leaves, 168. 
Alternation of generations, 395, 400, 402, 
414. 
Analogous, 108. 
Anatropous, Fig. 26. 
Angiosperms, 15, 18; Fig. 511. 
Annuals, 91. 
Annulus, 372, 405. 
Anther, 213, 235; Figs. 270-274. 
Antheridia, 389, 394, 398, 407. 
Antheridial, 388. 
Antherozoids, 389, 392, 395, 416. 
Antisepsis, 355. 
Arch of the hypocotyl, 42, 44. 
Archegonia, 390, 394, 407, 408. 
Archegonial, 388. 
Archegoniates, 408, 416. 
Archegonium, 391, 394, 398. 
Asexual generation, 395, 399, 409, 416. 
Asexual reproduction, 394, 395. 
Asexual spore, 395, 407, 409, 410, 416. 
Assurgent, 95. 
Axial placenta, 216, 300. 
Axil, 100, 166. 
Axillary buds, 145. 
Axis, 64, 65, 79, 152, 156, 159, 161. 
Bacillus, 348, 349. 
Bacteria, 333, 345, 347-353. 
Bark, 118, 119, 122, p. 128, (3). 
Basidia, 375. 
Bast, 116, 119, 122. 
Berry, 291. 
Biennial, 92. 
Bilabiate, 237, 243. 
Bilateral regularity, 219. 
Bilateral zonation, 326. 
Black rust, 360. 
Blade of leaf, 165. 
Biogenetic law, 253. 
Biological factors, 309. 
Bordered pits, 114, 117; Fig. 123. 
Boreal, 329. 
Bract, 161. E 
Bryophytes, 334, 385-401. 
Bud scales, 147-149. 
Buds, 145, 155-158. 
Bulb, 107. 
Button (of mushroom), 370. 
Calyptra, 399. 
Calyx, 211. 
Cambium, 115, 116, 120, 123. 
Cap, 372, 373. 
Capillarity, 136; Exp. 53. 
Capitate, 220. 
Caprification, 279. 305. 
Caprifig, 279. 
Capsule, 298. 
Carbon, 27, 28, 62. 
Carbon dioxide, 29, 63, 185, 186, 187, 189, 
Exps. 28, 25. 
Carpels, 216, 288. 
Caruncle, 13. 
Catkin, 161. 
Caulicle, 46. 
Cedar apples, Fig. 456. 
Cell, 6, 7. 
collecting, 184. 
companion, 114. 
Cell sap, 7, 110. 
Cell wall, 7, 183. 
Central cylinder, 67. 
Central placenta, 216, 300. 
Chalaza, 13. 
‘Chlorophyll, 186, 341, 366. 
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