INDEX 





Abies, 376 



Absorption, 12, 20, 51, 54 



Acer, 457, 459 



Accompanying cells, 79, 80 



Achlya, 219 



Actinomorphic, 387 



Adhesion, 385, 471 



Adhesive discs, 108, 109 



Adiantum, 329 



Adlumia, 443 



Aecial stage, 252 



Aeciospores, 252 



Agaricaceae, 259, 260 



Agaricales, 259 



Agrimony, 450 



Air chambers, 273, 282, 283, 336, 402 



Akene, 398, 438, 440 



Albugo, 222, 223 



Alder, 432 



Algae, 173 



blue-green, 164, 233 



brown, 201 



colonial, 178 



conjugating green, 185 



filamentous green, 190 



green, 174 



red, 210 



tubular green, 195 



unicellular green, 174 

 Alga-like fungi, 218 

 Allen, 215 

 Allelomorph, 141 

 Alnus, 432 



Alternation of crops, 67 

 Alternation of generation, 136, 137, 

 194, 201, 211-216, 256, 271, 279, 

 281, 312, 319, 352 

 Amanita, 261 

 Amaryllis family, 419 

 Ambrosiaceae, 485, 489 

 Ament, 429, 430 

 Ammonia, 66, 159, 160 



32 493 



Angiospermae, 378 

 Ankistrodesmus, 182 

 Annual rings, of scars, 75, 73 



of xylem, 91, 92 

 Annuals, 69 

 Annulus, 261, 262, 300, 301, 306, 307, 



316, 326, 327, 355 

 Anther, 116, 117, 379 

 Anther, versatile, 408 

 Antheridial cell, 121, 122, 358, 369, 



370, 392 

 Antheridium, antheridia, 196, 208, 



274. 303 



Antherozoids, 196, 275 

 Anthoceros, 292, 294 

 Anthocerotales, 292 

 Antipodal cells, 119, 120, 390 

 Antitoxin, 164 

 Apophysis, 305, 306 

 Apple, 450, 451 



rust, 256, 257 

 Aquatic plants, 39, 41, 64 

 Arales, 410 

 Aralia, 30, 465 

 Araliaceae, 465 

 Archangiopteris, 316 

 Archegonium, 275, 276, 303, 350 

 Arcyria, 150, 151 

 Aroid order, 410 

 Arrow- wood, 481, 482 

 Arum, 411, 413 

 Ascocarp, 229 

 Ascomycetes, 228 

 Asco-lichens, 232 

 Ascopores, 229 

 Ascus, asci, 229, 230 

 Asexual generation, 136, 137, 194, 



204, 214, 256, 271, 279, 281, 319, 



320 



Asexual spore, 123, 172 

 Aspergillales, 240 

 Aspergillus, 241, 242 



