668 



BOTANY OF THE LIVING PLANT 



Azygospore, a body resembling a 

 zygospore, but produced without 

 syngamy : in Mucor, 416. 



Bacillus, rod-shape of Bacteria, 448 ; 

 anthracis, 452 ; B. subtilis (Hay 



Bacillus), 448 (Fig. 346) ; B. radi- 

 cicola, in root-tubercles, 127, 136 



(Fig. 164). 

 Bacteria in general, Chap, xxviii, 448 ; 



in soil, 98, 451 ; aerobic and an- 

 aerobic, 450 ; nutrition of, 450 ; 



cilia of, 448 ; rapid multiplication 



of, 449 ; effect of light on, 450. 

 Bacterium tumefaciens, causing 



Crown Gall, 453. 

 Bacterioids, turgid forms of Bacillus 



radicicola found in root-tubercles, 



237 (Fig. 164). 

 Bamboo, mechanical construction of 



stem of, 182 (Fig. 114). 

 Banana, marginal tearing of leaf, 



189. 

 Barberry, 345 ; as host for Aecidium 



(Puccinia), 433 (Fig. 330) ; diseased 



patches on, 437 (Fig. 337). 

 Barbula muralis, protonema of, 462 



(Fig. 356) ; bulbils of, 466. 

 Bark, 65. 

 Barley, root-tip of, 88 (Fig. 63) ; 



analysis of, 660 ; origin of, 661. 

 Basidio-Lichenes, those Lichens in 



which the fungal constituent may 



be classed under the Basidio- 



mycetes, 446. 

 Basidiomycetes, fungi which produce 



basidia, 400, 431 (Chap, xxvii.) ; 



absence of sex in, 431. 

 Basidiospores, spores produced on 



basidia, 400, 431 (Fig. 328), 445 



(Figs. 344, 345, ; like tetraspore, 



43i. . . 



Basidium, the characteristic spore- 

 bearing body of the Basidio- 

 mycetes, 400, 431 (Fig. 328), 445 

 (Figs. 344, 345) ; comparison with 

 ascus, 431 ; reduction in, 432 ; 

 septate of Puccinia, 436 (Fig. 335) ; 

 of Ustilagineae, 440 (Fig. 339). 



Bast-fibres, 59 (Fig. 38), 177. 



Bast-parenchyma, 59 (Fig. 38). 



Bauhinia, correlation in leaf, 218, 



345- 

 Bean (Vicia Faba), 6 (Fig. 2), 92 (Fig. 



66) ; etiolation of, 146 (Fig. 91) ; 

 correlation in leaf of, 218 ; root- 

 nodules of, 235 ; analysis of, 655 ; 

 origin of, 656. 

 Bean seedling, geotropism of, 155 

 (Fig. 94). 



Beech, ectotrophic mycorrhiza of, 

 228 ; bud of, 596 (Fig. 451). 



Beetroot (Beta vulgaris), origin and 

 analysis of, 655, 656. 



Beggiatoa, 451. 



Begonia, propagation of, by adventi- 

 tious buds, 252 (Fig. 176). 



Beri-beri, 663. 



Berry, a fruit with the whole pericarp 

 succulent, 329 (Fig. 252). 



Bicornes, 639. 



Bidens, 648 ; hooked-fruits of, 328 

 (Fig. 251). 



Bignoniaceae, climbing habit of, 213. 



Bilateral symmetry, where the sides 

 of an organ or shoot are alike, as in 

 many sea-weeds, 205, 378 (Fig. 

 280). 



Bilberry, 640. 



Bird's-nest Orchis (Neottia), mycor- 

 rhiza in, 230-233 ; saprophytism 

 of, 232 (Figs. 160, 161). 



Biscutella laevigata, polyploidy in, 



584. 

 Bitter Cress, explosive fruit, 165 (Fig. 



101). 

 Blackberry, analysis of, 657. 

 Bladderwort (Utricularia), 241 (Fig. 



167, A). 

 Bladder-wrack, 378. 

 " Bleeding," 108. 

 Blue-green Algae, 376. 

 Boehmeria, fibrous cells of, 177. 

 Bog iron ore, 451. 

 Bog Moss (Sphagnum), 113. 

 Bog Myrtle, nodules, 239. 

 Boletus, 401 ; Sporodinia on, 415. 

 Bordered pits, of Conifers, 530 (Figs. 



417, 418). 

 Botryopteris cylindnca, stele of, 485 



(Fig. 375). 593 (Fig- 449). 



Botrytis, 395. 



Bottom yeasts, 450. 



Brachymeiosis, 424. 



Bracken, 483 ; vegetative propaga- 

 tion of, 253 ; rhizome in section, 

 486 (Fig. 379) ; meristele of, 488 

 (Figs. 377, 378). 



Bract, a reduced leaf, subtending a 

 flower, 257. 



Bracteole, a reduced type of bract, 

 borne on a relatively higher branch 

 of an inflorescence, 257. 



Bract-scale of Conifers, 534 (Fig. 422). 



Bran, analysis of, 659. 



Branching, axillary, 347 ; distal, 

 348 ; adventitious, 348. 



Brassica, 10 (Fig. 3) ; Cabbage, 

 Kale, Cauliflower, Turnip, 654, 655. 



Break-down (Chap, viii.), 114. 



