INDEX AND GLOSSARY 



Numbers in parenthesis refer to paragraphs 



Aborted: crowded out, (316). 



Abronia, Fig. 18. 



Abutilon, 372, Figs. 182, 520. 



Acacia, leaf, 108, Fig. 163. 



Accessory buds: more than one in an axil, 



(88). 

 Accessory fruit: other parts grown to the 



pericarp, (311), 161. 

 Acclimatization: adaptation to a climate 



at first injurious, (367). 

 Acer, 376, Figs. 523-526. 

 Acetic acid, 271. 

 Achene: dry, indehiscent, one-seeded 



pericarp, (313). 

 Achillea, 437. 

 Acorn, 155, 178. 

 Acorus, 328. 

 Actsea, 359. 



Acuminate: taper-pointed, (211). 

 Acute: sharp-pointed, (211). 

 Adder's-tongue, 331; fern, 198, Fig. 368. 

 Adiantum, 323. 

 Adventitious buds: those appearing on 



occasion, (54, 124). 

 .Ecidia, 191. ^Ecidiospore, 191. 

 Aerial roots, 10, Figs. 12-14. 

 ^sculus, 377. 

 Ageratum, 437. 



Aggregate fruit: one formed by the co- 

 herence of pistils that were distinct 



in the flower, (321). 

 Agrimonia, 387. 

 Agrimony, 169, 387. 

 Ailanthus, leaf-scars, 37, Figs. 57; seeds, 



168. 



Air-plants, 11. 

 Alcanin, 273. 

 Alder, 345. 



Aleurone grains, 275, Fig. 445. 

 Alfalfa, 3, 7, V9, 94, 137, 172, 251, 383, 



Figs. 21, 246, 529; nodules on root, 78. 

 Algae, 181, 183, 185, 201, 207, 263, 266. 

 Alkaloids, 271. 



Almond, 61, 251, 271; bud, 39, Fig. 68. 

 Alnus, 345. 

 Alpine plants, 229. 

 Alsike clover, 382. 

 Alternate leaves, 47. 

 Alternation of generations, 182, 201. 

 Althea, 148, 372, 373. 

 Alyssum, 160, 367, 368, Fig. 519. 



Amaranth, 170, Fig. 411. 



Amaryllidacese, 335. 



Ambrosia, 436, Figs. 416, 556. 



Amelanchier, 391. 



Amoeba, 266. Amoeboid, 266. 



Ampelopsis, leaves of, 100, Fig. 155. 



Amphibious, 208. 



Amylo-dextrine, 275. Amylose, 271. 



Anacharis, 85, Fig. 439. 



Analogy: related in function or use, (223). 



Anaphalis, 444. 



Anemone, 356; fruit, 156. 



Anemonella, 357. 



Angelica, 398. 



Angiosperms, 327. 



Aniline for staining, 73. 



Annual: of one season's duration, (10). 



Annular, 267. 



Antennaria, 443. 



Anthemis, 437, Fig. 417. 



Anther: pollen-bearing part of the sta- 

 men, (270). 



Antheridia, 181, 187. Antheridiophore, 

 194. 



Anthodium: flower-head of the Com- 

 positae,.(251). 



Antirrhinum, 406. 



Antitropic: against the sun, (243). 



Apetalous: petals missing, (273, 290). 



Aphyllon, 90, Fig. 131. 



Apical; at the apex or top, (317). 



Apios, 385. 



Apium, 399. 



Apocynacese, 418. 



Apparatus, 301. 



Apple, 20, 32, 68, 251, 254, 391; acid, 271; 

 bud, 36, 39, 40, Fig. 71; bud-variation, 

 238; cells, 263, 265; foliage, 65; fruit, 

 162, Fig. 295; inflorescence, 123, Fig. 

 294; leaf, 83; leaf-scar, 37; pear -graft, 

 28; phyllotaxy, 48, Fig. 84; pruning, 

 Figs. 102, 104; thorns, 108; tree, 14, 

 64, 93, 220, Fig. 17. 



Apricot, 251, 366; bud, 37, 39, 41, Fig? 

 55, 68; fruit, 161. 



Aquatic, 207; society, Fig. 401. 



Aquilegia, 358, Fig. 517. 



Arabis, 388, Fig. 536. 



Aracese, 327. . 



Arboriculture, 257. 



Arborvitse, 326, Figs. 404, 405, 485. 



(447) 



