666 



BOTANY OF THE LIVING PLANT 



Albuminous-seed, in which endo- 

 sperm persists till ripeness, 319 

 (Fig. 239). 



Alchemilla, somatic parthenogenesis 

 in, 587. 



Alcoholic fermentation, 136. 



Alder, root-nodules of, 239. 



Aleurone-grains, 126 (Fig. 84). 



Aleurone-layer, in wheat, 659 (Fig. 



504)- 

 Algae, sea-" weeds " and fresh-water 



" weeds," 3, 355 ; brown (Chap. 



xxiii.) ; green (Chap, xxii.) ; red, 



388 ; blue-green, 376 ; homoplasy 



in, 375- 



Alisma, embryology of, 313 (Fig. 

 232). 



Allelomorphs, pairs of genes corre- 

 sponding to pairs of contrasting 

 characters, such as tallness or 

 dwarf ness in the Pea, 572. 



Allium, somatic division of cells in, 

 20 (Fig. 11). 



Allo-polyploid, a polyploid the chro- 

 mosome sets of which are not alike, 

 583 (Fig. 444). 



Almond, analysis of, 657. 



Aloe, succulent leaf of, 74 ; stoma of, 

 77 (Fig. 52). 



Alopecurus, 618. 



Alpine flora, chiefly perennial, 195. 



Alpine plants, xerophytic features of, 

 211. 



Alternation of Generations in seed 

 plants, 336, 456 ; in Algae, 390 ; in 

 general, 543 (Chap, xxxiv.). 



Amaryllidaceae, 608. 



Amides, 128 ; translocation of, 132. 



Amino-acids, 126, 128 ; translocation 

 of, 132. 



Ampelopsis, adhesive climbing of, 

 217 (Fig. 146). 



Amphibians, organisms, whether 

 plants or animals, which are de- 

 pendent on external liquid water 

 for completion of their life-cycle, 

 3, 454, 476, 547. 



Amphicosmia, bud of, 595 (Fig. 450). 



Amphithecium, external tract of cells 

 in the young moss sporogonium, 

 470 (Fig. 365). 



Anabaena, 377. 



Anaerobic organisms, those which live 

 normally or can exist without 

 access to atmospheric air : anaero- 

 bic respiration, 136-137. 



Analogy, 343, 346 ; defined, 344. 



Analysis, of roots and shoots, 655 ; 

 of legumes, 655 ; of fruits, 657 ; 

 of cereal grains, 660. 



Anatomy, 16. 



Anatropous, the inverted form of 



ovule, 294 (Fig. 216). 

 Andreaea, antheridium of, 467 (Fig. 



362) ; archegonium of , 468 (Fig. 363). 

 Androecium, applied collectively to 



all the stamens of a single flower, 



255- 

 Anemone, abortive ovules of, 322 



(Fig. 241). 



Aneura, sporogonium of, 475 (Fig. 



37i). 

 Angiosperms, seed-plants with their 



seeds protected by carpels, 3, 5, 



Chapters i-xix. 

 Animal agency, in pollination, 302 



(Fig. 220) ; in seed-dispersal, 328. 

 Animal kingdom, establishment of, 



359 ; nutrition of, 4 ; dependence 



of, 138. 

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

 Annual habit, applied to plants which 



germinate and develop, flower, and 



fruit in one season, 195. 

 Annual rings, 62 (Fig. 40). 

 Anterior-side, that side of a flower 



which faces the bract, 263. 

 Anther, the part of stamen bearing 



pollen-sacs, 281 (Figs. 201, 202). 

 Antheridia, 353 ; of Fungi, 399 ; of 



ferns, 501 (Fig. 393) ; of mosses, 



467 (Fig. 362) ; of Oedogonium, 



366 (Fig. 271) ; of Pythium, 405 



Fig. 304) ; of Fucus, 384 (Fig. 287); 



of Vaucheria, 371 (Fig. 276). 

 Antheridial mother-cell, a cell within 



the pollen-grain of flowering plants 



which divides to form the male 



gametes, 283 (Fig. 204). 

 Anthocerotales, 475, 548. 

 Anthostema, 256 (Fig. 178). 

 Anthrax bacillus, effect of light on, 



450- 



Anticlinal, applied to cell-walls, or 

 lines of cell-walls which run ap- 

 proximately at right angles to the 

 outer surface of the part, 19 (Fig. 

 10) ; these cut the periclinal walls 

 at right angles. 



Antipodal cells, a group usually of 

 three primordial cells attached at 

 the chalazal end of the embryo-sac, 

 295 (Fig. 216), 298 (Fig. 219) ; 

 after fertilisation, 315. 



Antirachitic vitamin D, 662. 



Antirrhinum majus (Snapdragon), 

 inheritance of flower colour, 574 

 (Fig. 437) ; inheritance of flower 

 shape, 575-57 8 ( Fi gs. 43^, 439). 



Anti-scorbutic acid (vitamin C), 663. 



