336 



INDEX 



Dichotomised steles of Stromatopteris, 202 

 (Fig.485) 



Dichotomy of Ankyropteris con-tigata, 18 

 (Fig. 318); ol Botrychioxylon, 18; of 

 Cyatheaceae, 305; of Difieuron, 18; 

 (equal) of Gleicheriia^ 214; oiG. linearis^ 

 193 (Fig. 472); oi Platyzovia^ 214 



Dicksonia, 263, 274 



D. aniarcdca, section of stem of, 265 



(Fig. 533) 

 D. arborescens^ 264 (Fig. 530) 



Dicksoniaceae, 260 sqq. (ch. xxix), 268 sqq. 

 (ch. xxx); distinct from Cyatheaceae, 

 326; sori of, 264 (Fig. 530) 



Dicksonieae, habit of, 263; sorus and spor- 

 angia of, 265 ; prothalli of, 267 



Dicranopteris, 219; { = Mertensia)^ 193; 

 spermatocytes of, 213 



Dictyophyllum^ 319, 323 

 D. exile, 321 

 D. rugostcin, 321 



DictyoxyHc cylinder of Osmiinda, 136 



Dineuroideae, 19, 38; of Sahni, 27 



DhteuroH, 27; dichotomy of, 18 



Diplolabis, 17; aphlebia of, 19 



D. Ronieri^ ramification of, 19 (Fig. 320); 

 stele of, 2 1 



Dipteridaceae, 311 sqq. (ch. xxxiv), 323; 

 anatomy of, 315 ; comparisons of, 318; 

 Fossil, 321; habit of, 311; Mesozoic, 

 318; sori and sporangia of, 316; spore- 

 counts of, 321 



Dipteridinae, 7 



Dipteris, 7, 311, 323; leaves of, 312 (Fig. 

 568); solenostele of, 315 ; veiiaiio a/ta- 

 xeti in, 311 

 D. conjugata, habit of, 322 (Fig. 580); 

 juvenile leaves of, 313 (Fig. 570); leaf 

 of, 315 (Fig. 573); prothallus of, 318 

 (Fig. 577); young sorus of, 317 (Fig. 

 575) 

 D. Lobbiana, fertile segment of, 314 (Fig. 

 571); juvenile leaves of, 313 (Fig. 569); 

 leaf-trace of, 316 (Fig. 574); sporangia 

 of, -h^l (Fig. 576) 

 D. quinquefiircata, leaf-segments of, 314 

 (Fig. 572) 



Dipteroids, 333 



Distribution of Gleicheniaceae, 328; of 

 Marattiaceae, ^-^ i ; oiMatonia-Dipteris, 

 329; of Schizaeaceae, 330 



Dryopteroids, 333 



Embryology, 4, 80 sqq.\ exoscopic, 120; in 

 the genus Ophioglossuin^Z^; oi Botry- 

 chium Lunaria, 'i;^ (Fig. 383); of Eu- 

 Bot>ychiu//i, 80 ; of Helmintlwstachys, 

 84 (Fig. 385), with a suspensor, 82; 

 of Macroglossutn, 121 (Fig. 413); of 

 Marattiaceae, 120, 121 (Fig. 412); of 

 Marattia Dotiglasii, 122 (Fig. 415); 

 of Marsilea vestita, 186 (Fig. 468); of 



Ophioglossaceae, 80 ; of Ophioglossmn 

 »ioliecca?iinn, 86; of O. vulgatuin, 84 

 (Fig. 386) ; of Osmundaceae, 146 ; of 

 Trtchoinanes, 246 



Endodermis of Helmittthostachys zeylaiiica, 

 56 (Fig. 347) 



"Equisetoid" hairs oi Boiryopieris, 13 



Etapteris Lacattei, sporangia of, 32 (Fig. 333) 

 E. Scotti, rachis of, 27 (Fig. 327) 



Eii-Botrychhini, 93; embryology of, 80 



Eu-Dicranopteris^ 218, 219 



Eu-Gleichenia, 5, 193, 218, 219; broad scales 

 of, 195; spermatocytes of, 213 



Eu-Ophioglossum, 93 



Eu-Schizaea, 165 



Eu-Todea, 152 



Eusporangiate type, 3; Ferns, antiquity of, 8 



Exoscopic embryogeny, 120 



Eeea, 250 



Ferns, antiquity of Eusporangiate, 8; arche- 

 type of, 5,40; "filmy," 234; geographical 

 distribution of, 327 ; of Mesozoic Period, 

 8, 325; of Mount Ophir, 322; (primitive) 

 general review of, 325 



Fertile X^'aS oi Aiieinia\Trochopteris) elegans, 

 162 (Fig. 446); leaves oi Schizaea, 154 

 (Fig. 437); pinna of Corynepieris, 113 

 (Fig. 405); \>\w[\?L oi Danaea alata, no 

 (Fig. 403); \ivcyc^\x\&o{ Klukia exilis^ 169 

 (Fig. 453); sfgm&nio( Dip/eris Lobbiaiia, 

 314 (Fig. 571); segments of Z/^f (?'///';«, 

 163; spike, morphological nature of, 87 



"Filmy" Ferns, 234; habit, 237; habit of 

 Leptopteris, 151 



Foliar trace of Clepsvdropsis antiqua^ 28 

 (Fig. 328) 



Fossil Coenopteridaceae, 228; Dipterida- 

 ceae, 321; Gleicheniaceae, 21 1 ; Marat- 



tiaceous, sori of, 



Osmundaceae, 



anatomy of (Table), 141; Palaeozoic, 228 

 Fungus, mycorhizic, 75 



Gametangia of Marattiaceae, 120 

 Gametophyte, saprophytic, 75 ; of Cyathea- 

 ceae, 303; of Gleicheniaceae, 212; of 

 Heliiii/it/iostachys, 78; of Hymenophyl- 

 laceae, 244; of Loxsomaceae, 256; of 

 Marattiaceae, i \%;olMarattiafraxinea, 

 1 18 (Fig. 410); of Ophioglossaceae, 75 ; 

 of Osmundaceae, 145 

 Gemmae, 245 ; of Tricho?nanes alatum, 

 246 (Fig. 517); of 7". Katdfussii, 246 

 (Fig. 517) . 

 Genera of Marattiaceae, 95 ; of Ophioglossa- 

 ceae, 93 

 Geographical distribution of Ferns, 327 

 Gleiche/iia, 7, 193, 219; anatomy of, 196; 

 branching of leaf of, 193; equal dicho- 

 tomy in, 214; juvenile leaves of, 194 

 (Fig. 473) ; mechanical deadlock in, 

 233; petiole of, 198 (Fig. 479); pinna- 



