INDEX 



{All numbers refer to pages; those in heavy black type indicate illustrations.) 



absciss layer, 245 



accessory buds, 186, 188 



accessory parts of flowers, 270 



accumulation in stems, igo 



achene, see akene 



acorn, 331 



actinomorphic flowers, 287 



adder's tongue, 261 



Adiantum, 419 



aeration, 226 



aerial stems, 145 et seq. 



agriculture, 12 e( seq., loi el seq., 376, 



392 el seq., 398 

 air chamber, 396, 397 

 air passages, 226 

 akene, 327, 329, 330 

 Albugo Candida, 386 

 aleurone, 341, 34s, 347 

 alfalfa, 340, 377 

 algse, 362, et seq. 

 alluvial soil, 100 



alternation of generations, 401 el seq. 

 amaranth, 327 

 amphibious plants, 396 

 andrcecium, 272, 287 el seq. 

 anemone, 390 

 angiosperms, 183, 260, 431, 440 el 



seq. 

 animals as seed carriers, 356 

 annual rings, 177 

 annuals, 139, 158, 337 

 annulus, 417, 418, 420 

 anther, 60, 272 



antheridiiun, 368, 370, 399> 400, 421 

 Anlhoceros, 403, 404 

 anthocyans, 246 

 ants, 313 

 apical, 130 

 apocarpous, 290, 291 

 apple, 83, 181, 292 

 Aralia racemosa, 217 

 arbor vit^, 431 



archegoniophore, 397, 399 

 archegonium, 398, 399, 409, 420, 421, 



430 

 Arisama Iriphyllum, 279 

 ascocarp, 386, 38S 

 ascomycetes, 390 

 ascus, 387, 3B8, 390 

 asexual reproduction, 57 

 ash, 187, 280 

 asparagus, 52, 155, 157 

 aspen, 28s 

 Aspidium, 418, 421 

 assimilation, 42, 351 

 aster, 170 

 atom, 95 

 autogamy, 303 

 autumnal colors, 242 el seq. ■ 

 available compounds, 349 

 axil, 53, 54, 128 

 axillary buds, 186 



B 



bacteria, 19, 374 et seq., 375, 392 

 bacteriology, 375 

 Balanophora, 335 

 balsam, 171 

 balsam poplar, 188 

 bamboo, 157, 173, 337 

 banana, 82, 216, 33s 

 banyan, 127 

 barberry, 251, 389 

 bark, 166, 178 el seq. 

 bases, 349 

 basidiomycetes, 391 

 basidium, 381, 382, 388, 389 

 bast, 138 

 bast fibers, 176 

 bean, 65, 66, 131, 153, 342 

 beech, 393 

 bees, 311, 313 

 beet, 140 

 begonia, 125 

 berry, 64, 331, 332 

 454 



