INDEX AND GLOSSARY 



667 



Antithetic alternation, 543, 546. 



Antitoxines, 453. 



Apical meristems, of Ferns, 493 

 (Figs. 383, 385). 



Apium graveolens (Celery), analysis 

 of, 655. 



Aplanospores, non-motile propaga- 

 tive spores of Algae, 372. 



Apocarpous, applied to the gyno- 

 ecium when composed of separate 

 carpels, 289 (Fig. 210), 321. 



Apogamous nuclear-pairing in Phrag- 

 midium, 438 (Fig. 338). 



Apogamy, where a sporophyte springs 

 directly from a gametophyte with- 

 out syngamy, 508 (Figs. 402, 403) ; 



545. 587- 

 Apomixis (or Apogamy). loss of 



sexuality, 545, 587. 



Apophysis, basal part of capsule in 

 Mosses, 469 (Fig. 364). 



Apospory, transition directly from 

 sporophyte to gametophyte, with- 

 out intervention of spores ; in 

 Ferns, 507 (Fig. 401), 545. 



Apple, 622 (Figs. 483, 484, A) ; analy- 

 sis of, 657 ; cork of, 65 ; deciduous 

 leaves of, 194 ; flower of, 290 

 (Fig. 212) ; stigma of, 291. 



Apposition, of layers in growth of 

 cell-wall, 23. 



Apricot, analysis of, 598. 



Aqueous cells, in folding leaves of 

 Grasses, 187 (Figs. 120-122). 



Arachis hypogaea (Peanut, Monkey- 

 nut), geotropic curvature of fruit, 

 334 ; analysis of, 655. 



Araucaria, leaf arrangement of, 203. 



Archegoniatae, 454 (Chap, xxix.) ; 

 origin of, 546 ; size-relation in, 597. 



Archegonium, 353 ; of . Pine, 535 

 (Figs. 423, 424) ; of Pteridophytes, 

 455 ; of Selaginella, 518 (Fig. 412) ; 

 of Ferns, 502 (Fig. 394) ; of Mosses, 

 468 (Fig. 363). 



Archesporium, the cell or group of 

 cells from which the spores of a 

 sporangium or sporogonium origi- 

 nate ; of Moss, 469 (Fig. 364), 471. 



Arctic flora, chiefly perennial, 195. 



Arctic plants, xerophytic features of, 

 211. 



Arillus, an extra integument formed 

 after fertilisation, 318 (Figs. 238). 



Arisarum, 393. 



Armillaria mellea, parasitism of, 393 

 (Fig. 292), 443 ; basidium of, 431 

 (Fig. 328) ; rhizomorphs of, 394. 



Aroids, prehensile roots of, 217. 



Artichoke, 124. 



Articulate plants, 524. 



Ascent of water, 105. 



Ascogenous hyphae, in fruit of Asco- 

 mycetes, 400, 401, 424 (Fig. 321). 



Asco-lichenes, 426. 



Ascomycetes, fungi which produce 

 asci, 418 (Chap, xxvi.) ; alterna- 

 tion in, 424 ; cytology of, 424. 



Ascophyllum, 385, 393. 



Ascospores, spores produced in asci, 

 418 (Fig. 316) ; of Penicillium, 423 

 (Fig. 321) ; as tetraspores, 401, 418. 



Ascus, the characteristic spore-bear- 

 ing body of the Ascomycetes, 418 

 (Fig. 316) ; development of, 419, 

 424. 



Ash (Fraxinus) delayed germination, 

 140. 



Asparagine, 128. 



Asparagus, 608. 



Aspen, lamina of, 72 (Fig. 47) ; 

 petiole of, 186. 



Aspergillus, 418, 422 (Fig. 320). 



Asplenium, sporophytic budding in, 



494. 



Asterochloena, stele of, 593 (Fig. 449). 



Asteroxylon, 478 (Fig. 372 a). 



Astilbe, 630. 



Astrantia, mechanical construction 

 of stem, 183 (Fig. 116) ; simple 

 umbel of, 262 (Fig. 184), 638. 



Asymbiotic germination, 234. 



Athyrium Filix-foemina, v. claris- 

 sima, chromosomes of, 509 ; apo- 

 spory in, 507 (Fig. 401) ; par- 

 thenogenesis in, 587. 



Atmospheric nitrogen, fixation of, 

 127. 



Atropa Belladonna (Nightshade), 642. 



Aulacomnion, gemmae of, 466 (Fig. 

 360). 



Autophyte, a plant which is com- 

 pletely self-nourished, 220. 



Auto-polyploid, a polyploid the chro- 

 mosome sets of which are all alike, 

 583 (Fig. 444). 



Autotrophic nutrition, complete self- 

 nutrition, 220 ; in Bacteria, 450. 



Auxanometer, an instrument for 

 amplifying and measuring growth, 



145. 

 Auxin, action of, 151 (Fig. 73). 



Auxospores of Diatoms, 375. 



Avena sativa (Oat), analysis of, 660 ; 

 origin of, 661. 



Axillary buds, buds arising in the 

 angle between stem and leaf, 9, 80 

 (Fig. 55) ; branching, 347. 



Axis, morphological category of, 347. 



Azotobactcr, 127. 



