INDEX 



719 



Arisarum, 127. 



Aspidium acrostichoides, 24 (Fig. 8). 



Aspleniitm obtusifolium, 583 ; resecliim, 58 3 ; 



shepherdi, 626 (Fig. 347). 

 Assimilatory system in Bryophytes, 662. 

 Astelic state, 192. 

 Asterocalamites, 373 (Fig. 199). 

 Asterochloena, 501. 

 A sterophyllitcs, 372. 

 Aslerotheca, 511 (Fig. 282), 521 (Fig. 289) ; 



Stcnil'er^ii, 522 (Fig. 289). 

 Athyrium filix-foemina v. clarissima apos- 



pory 55 (Fig. 37). 

 Atrichuin, 35 (Fig. 19). 

 Auricula polystely, 192, 193. 

 Axillary branching in Ferns, 627. 

 Axis pre-existent, 141. 

 Azolla, 176, 6 10. 



Bartramia, 281. 



Basal wall, 666 ; indeterminate in hoetes, 



358. 



Basipetal sorus, 635. 



Bilateral construction, 201. 



BlecJimtut, 631 ; B. lanceolata, 632. 



Blechnum boreale differentiation of leaves, 

 167. 



Bornia, 150, 154. 



Bornia radiata, 384. 



Bothrodendron Kiltorchense, 228. 



Botrychioxylon, 500. 



Botrychiwm, external characters, 441 ; spore- 

 producing members, 452 (Figs. 244, 252, 

 253); anatomy, 458, etc. ; prothallus,469 ; 

 embryo, 269 (Figs. 261-266) ; daucifoliiun 

 (Figs. 43, 44) ; simplex, 441 (Fig. 240) ; 

 Lzmaria, 441 (Fig. 241); abnormal fer- 

 tility, 1 60 (Fig. 85) ; daucifoliiun, 441 ; 

 virginianitin, 441 ; obliqitum, 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 Phy tonic theory, 138. 



Bryales, 277. 



Bryophyta, 257 ; balance of alternating 

 generations in, 35. 



Buxbaumia, 281 (Fig. 137). 



Calamites pettycurensis, 390. 

 Calamostac/tys, 150 (Fig. So) ; 372, 374, 370 



(Fig. 202) ; morphology of cone, 384 and 



footnote; lUnucynna, 374, 380 ; Ct-riiimi 



int, 375; Cashi'aiut, 381 (Fig. 210); 



Zeilleri, 392 ; /Hiiiisyaiia, 408 (Fig. 225). 

 Gambia! activity, 335. 

 Carinal strands <>l fci/itisftitm, 388. 

 (.'iisitarina, 97 (Figs. 55, 56). 

 Catharinea, 35 (Fig. 19). 

 Cauline bundles, 195 ; stele, 195. 

 Cauloids (Lignier), 136. 

 Canlop/cris, 507, 511 (Fig. 280), 625. 

 Ceratodon purpureus, 277 (Fig. 135). 

 Ceratopteris, leaf development, 628. 

 Cheirostrobus, 230, 404, 424 (Fig. 223, 224). 

 Chclepteris, 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. 

 Cingiilaria, 3/6 (Fig. 204). 

 Cladosiphonic structure, 189, 198. 

 Clarkia, 96 (Fig. 54). 

 Cleistocarpae, 282. 

 Closterium, 70 (Fig. 40). 

 Coleochaele, 73 (Fig. 42), 260. 

 Columella of Anthoceros, 268; of Sp/ni^- 



iimn, 273. 



Columella-less forms of Notothylas, 270. 

 Common bundles, 195. 

 Comparative morphology, 5. 

 Conjugatae, z\'gotes of, 7- 

 Cordaiteae, early existence of, 228. 

 Corsim'a, 263. 



Coryneptfris, 503 (Fig. 273), 529. 

 Cotyledon, variable in time and place <>f 



origin, 670; orientation constant, 671. 

 Cotyledons, conslanl uricntation of, 182. 

 Crossotheca, 528. 

 Cntleria, 66. 

 Cyntheac, 602 ; phyletic position of, 656 



(Fig. 354); dcalloitn. sorus, 604 (Fig. 335) ; 



linrayana, 606 (Fig. 337) ; sorus, 602 : 



anatomy, 605 (Figs. 336, 337, 33*1. 

 Cyatliodium, 237 (Fig. 1 16), 263 (Fig. 123). 

 Cyat hot rat Ints all us, 521. 

 Cycadeoidea, 705. 



Cycads, reduced sporophylls of, 154. 

 Cyclanthera, 126. 



