INDEX 
Arisarum, 127, 
Aspidium acrostichoides, 24 (Fig. 8). 
Asplenium obtusifolium, 583; resectum, 583; 
shepherdt, 626 (Fig. 347). 
Assimilatory system in Bryophytes, 662. 
Astelic state, 192. 
Asterocalamites, 373 (Fig. 199). 
Asterochloena, 501. 
Asterophyllites, 372. 
Asterotheca, 511 (Fig. 282), 521 (Fig. 289) ; 
Sternbergit, 522 (Fig. 289). 
Athyrium filix-foemina v. clarissima apos- 
pory 55 (Fig. 37). 
Atrichum, 35 (Fig. 19). 
Auricula polystely, 192, 193. 
Axillary branching in Ferns, 627. 
Axis pre-existent, 141. 
Azolla, 176, 610. 
Bartramia, 281. 
Basal wall, 666; indeterminate in Jsve¢es, 
358. 
Basipetal sorus, 635. 
Bilateral construction, 201. 
Blechnum, 631; &. lanceolata, 632. 
Blechnum boreale differentiation of leaves, 
167. 
Bornia, 150, 154. 
Bornia radiata, 384. 
Bothrodendron Kiltorchense, 228. 
Botrychioxylon, 500. 
Botrychium, external characters, 441; spore- 
producing members, 452 (Figs. 244, 252, 
253); anatomy, 458, etc.; prothallus, 469; 
embryo, 269 (Figs. 261-266) ; dauctfolium 
(Figs. 43, 44)3 simplex, 441 (Fig. 240) ; 
Lunaria, 441 (Fig. 241); abnormal fer- 
tility, 160 (Fig. 85); daucifolium, 441; 
virginianum, 441; obliguum, 182, 471 
(Figs. 264-266). 
Botryopterideae, 498, 501 footnote ; phyletic 
position of, 654 (Fig. 354). 
Botryopteris, sporangia of, 501, 503. 
Bracts or sporophylls, 693. 
Branching of shoot, dichotomous primitive, 
682; transition to monopodial, 682; 
lateral branchings, 682; of spikes in~ 
Ophioglossaceae, 438 (Fig. 239). 
Braun’s criticism of Phytonic theory, 138. 
Bryales, 277. 
Bryophyta, 257; balance of alternating 
generations in, 35. 
Buxbaumia, 281 (Fig. 137). 
719 
Calamites pettycurensis, 390. 
Calamostachys, 150 (Fig. 80) ; 372, 374, 376 
(Fig. 202) ; morphology of cone, 384 and 
footnote; Binneyana, 374, 380; German- 
tca, 375; Casheana, 381 (Fig. 210); 
Zeillert, 392; Binneyana, 408 (Fig. 225). 
Cambial activity, 335. 
Carinal strands of Zguzsetum, 388. 
Casuarina, 97 (Figs. 55, 56). 
Catharinea, 35 (Fig. 19). 
Cauline bundles, 195; stele, 195. 
Cauloids (Lignier), 136. 
Caulopteris, 507, 511 (Fig. 280), 625. 
Ceratodon purpureus, 277 (Fig. 135). 
Ceratopterts, leaf development, 628. 
Chetrostrobus, 230, 404, 424 (Fig. 223, 224). 
Chelepteris, 533, 539- : 
Chemiotactic action, 30. 
Chlorophyceae, 70. 
Chorisis of sporangiophores, 695 (Fig. 361); 
of bracts, 695 (Fig. 361). 
Chromatin, 47. 
Chromosome-cycle, irregularities of, 58. 
Chromosomes, 47 ; their numbers, 48. 
Cingularia, 376 (Fig. 204). 
Cladosiphonic structure, 189, 198. 
Clarkia, 96 (Fig. 54). 
Cleistocarpae, 282. 
Closterium, 70 (Fig. 40). 
Coleochaete, 73 (Fig. 42), 260. 
Columella of Azzthoceros, 268; of Sphag- 
num, 273. 
Columella-less forms of Motothylas, 270. 
Common bundles, 195. 
Comparative morphology, 5. 
Conjugatae, zygotes of, 70. 
Cordaiteae, early existence of, 228. 
Corsinia, 263. 
Corynepterts, 503 (Fig. 273), 529. 
Cotyledon, variable in time and place of 
origin, 670; orientation constant, 671. 
Cotyledons, constant orientation of, 182. 
Crossotheca, 528. 
Cutleria, 66. 
Cyatheae, 602; phyletic position of, 656 
(Fig. 354); dealbata, sorus, 604 ( Fig. 335) + 
Imrayana, 606 (Fig. 337); sorus, 602 ; 
anatomy, 605 (Figs. 336, 337, 338). 
Cyathodium, 237 (Fig. 116), 263 (Fig. 123). 
Cyathotrachus altus, 521. 
Cycadeotdea, 705. 
Cycads, reduced sporophylls of, 154. 
Cyclanthera, 126. 
