296 



INDEX 



Phyllifis, 197 ; soral morphology of, 

 141 ; stock of, 141 (Fig. 671) ; venation 

 and sori of, 138 (Fig. 669) 



Aspleniutn laticeum, 143 (Fig. 672) 



A. Trichomanes^ sporangia of, 140 (Fig. 

 670) 



AfhyriujH, 138, 140, 151, 278; anatomy of, 

 143; features of, 144 (Fig. 673); sori 

 of, 144; vascular receptacle of, 145 

 A. alpestre, abortive indusium of, 145 



A. decurtatuju, sori of, 145 (Fig. 674) 

 Azolla, 260, 282 



A.Jiliculotdes, sori of, 260, 261 (Fig. 754) 



Basal indusium, 112 



Basipetal, sequence of sporangia, 9; succes- 

 sion of Pteridmin aqtiiUniiin var. caii- 

 datutn, 45 (Fig. 610) 



Bearings, evolutionary, 285 sqq. (ch. l) 



Beech Fern {Dfyopteris phcgoptcris)^ 120, 

 129 



Bibliographies, 14, 39, 62, 98, 119, 137, 151, 



162, 199, 232, 238, 248, 294 

 Blade, progressive integration of, 194 

 Blechninae, 138 



Blechnoid coenosorus, disintegration of, 190 



Blechnoid Ferns, i62,sqq. (ch. XLIV) ; Acros- 

 tichoid development of, 194; compari- 

 son of, 192 ; phyletic grouping of, 198 ; 

 .xerophytic character of, 163 



Blechnoids, 2; perispore in, 166 



Blcclmi/Di, 99, 163, 198, 279; coenosori of, 



163, 165; disintegration of coenosorus 

 of, 195; flange of, 173, 193; flange of, 

 a new structure, 165 ; morphological 

 progression, 172; phyletic margin of 

 sporophyll in, 165; phyletic slide in, 

 173; scheme of venation of, 173 (Fig. 

 69s) 



B. attenuatum^ fertile pinna of, 174 (Fig. 

 696) 



B. brasihejise^ development of fertile pin- 

 na of, 170 (Fig. 692) 



B. capense^ 181 ; development of fertile 

 pinna of, 170 (Fig. 692) ; disintegration 

 of coenosorus of, 180 (Fig. 701) 



B. cartilagmeuiu, 180 (Fig. 701) 



B. Fraseri^ 193 ; pinna of, 180 (Fig. 701) 



B.fraxmein?!, 180 (Fig. 701), 184 



B. lanceolatitvi^ 167; fertile pinna of, 168 

 (Fig. 690) 



B. occidentale, 171 (Fig. 693) 



B. Paiersoni, 174 



B. penna-rnarina^ 174 



B. piinctulatum Sw. var. Krebsii Kze., 

 181, 184, 279; habit of, 185 ; sporophyll 

 of, 195; soral variations of, 186 (Fig. 

 706); stock of, 182 (F'ig. 703) 



B. {Salpichlae7id)volitbile^ 171 (Fig. 693); 

 pinnae of, 172 



B. spicajit^ 169; development of fertile 



pinna of, 170 (Fig. 692); fertile pinna 

 of, 169 (Fig. 691), 170 (Fig. 692); pin- 

 na of, 180 (Fig. 701) 

 B. iabulare, development of flap and sorus 

 of, 168 (Fig. 690); habit of, 164 (Fig. 

 686), 166; stock of, 166 (Fig. 689) 



Botrychiitin^ 270 



Botryopterideae, 269 



Boiryopten's, hairs of, 270 



Bracken, 41; coenosorus of, 43 ; compensa- 

 sion strand of, 43 ; simple hairs of, 41 



Bracken {Pteridiinn)^ glands of, 41 ; pneu- 

 matophoric lines of, 41 ; vascular struc- 

 ture of, 41 



B?-ainea, 174, 194, 198, 279; comparison with 

 A crostichiim praestantissimutn, 1 94 



B. insignis, anatomy of, 177; pinna of, 

 181 (Fig. 702); young pinna of, 180 

 (Fig. 701) 



Bramble Fern, climbing habit of, 29 



Bristles oi Zygoptet'is, 270 



Bulk, proportion of surface to, 289 



Campleria, 56 



Cainptosorus^ 151, 199 ; irregular soral tracts 

 of, 190 (Fig. 707) 



C. f/usop/iyllus, sori of, 190 (Fig. 707) 

 C. sibirictts^ 190 



Cassebeera, 62, 83, 92 ; flange of, 193 

 Causal stimuli, 284 

 Causality, question of, 292 

 Cells, germ, 291, 292; somatic, 292 

 Ceraiopteris, j^i-, 75) 93» 97) 281 ; habit of, 70 ; 

 medullary system of, 71 ; sori of, 71 ; 

 sporangia of, 71 ; spore-counts of, 71 ; 

 vascular system of, 70 

 C. thalicti-oides, variable sporangia of, 72 

 (Fig. 631); young sporophylls of, 72 

 (Fig. 630) 

 Cerop/eris calomelanos, 198 

 Ceterac/i, 92, 138, 151, 278; abortion of in- 

 dusium of, 147 

 C. officinariini, 148 (Fig. 676) 

 Chaffy scales, 275 

 Characters, oi Metaxya, 233; oi Prosaptia, 



255 ; of Taenitis blccJinoidcs^ 255 

 Cheilanihcs, 6, 81, 88 (Fig. 642), 98, 281 ; 

 habit and anatomy of, 87 ; prothallus 

 of, 90 ; sorus of, 89 

 C. Fendleri, 87 

 C. gracillinin, 87 

 C. laniigtnosa, 87 

 C. h'udigcra, 193 

 C. inicrophylla^ young fertile pinnule of, 



89 (Fig. 643) 

 C. pteridioides^ 89 

 Cheilanthinae-Pterideae, 6, 81 

 Cheilanthoid group, 81 



Cheiropjeiiria, 232, 280, 283 ; Clepsydroid 

 trace, 204; diplodesmic state of, 205 

 (Fig. 716); fertile blade of, 206 (Fig. 



