INDEX 



359 



common, 139; system al node of Lox- 

 soma Ciinninghamii^ 141 (Fig. 130); 

 system of Cibotiuin {Dicksonia) Baro- 

 met2^ 170 (Fig. 163) ; system of Gymno- 

 gramme jap07iica^ i67(Fig. 160); system 

 of axis, 140; system o{ Pellaea rotundi- 

 folia^ 148 (Fig. 139); system of Pteris 

 elata^ 152 (Fig. 145); tissue of leaf, 61 ; 

 tissue of stem, 61 



Vegetative mitosis, 22 (Fig. 29); propaga- 

 tion, 10 



Veins, fusion of, 64 



Venation, 160, 174; of leaf, 61; of leaf- 

 blade, 83 



Venter, 295 



Ventilating areas, 203; system, 184 



Ventilation, 130 



Ventral-canal-cell, 17 



Vestigial annulus, 255 ; lower indusium, 222 



Vestiture, 57 



Wall, basal, 19, 301 ; distal region of, 252 ; 



proximal region of, 253 

 Walls, principal, 107, 112 ; sextant, 107, 112 

 Water-glands of Polypodiiiin I'ldgare, 205 



(Fig. 196) 

 Water-storage, 43 

 Webbing, 83, 102 ; progressive, 85 

 Wings of leaves of Angiopteris^ 112 (Fig. 



109) 

 Woodsia ilvensis, antheridia of, 287 (Fig. 



277); filamentous type of, 275 (Fig. 



266) 



IVoodzfjardia^ 11 (Fig. 13) 



Xerophytic habit, 41 



Xylem, 6 ; of steles, outlines of, 183 (Fig. 



175) 

 Xylem -core, solid, of Botryopteris forensis, 



127 

 Xylic-gaps, 143 

 Xylic-perforations, 149 



Young leaf of Ceratopteris, 9 (Fig. 11); 

 leaves of Schizaea riipestris, 220 (Fig. 

 213) ; plant of Anemia phyllitidis, 125 

 (Fig. 118); plant oi Botrychium, 184; 

 plant oi Helmiiithosiachys, 184; plant 

 of PteridiiiDi aquilnii/iii, 75 (Fig. 69); 

 sori of Dipt cr is coiijiigata^ 216 (Fig. 

 209) ; sori of Histiopteris iricisa, 224 

 (Fig. 219) ; sori of Pteris serrulata, 224 

 (Fig. 220); sorus oi Dicksoniii Scheidei^ 

 218 (Fig. 211), 219 (Fig. 212); sorus of 

 Hypolepis repe?is, 222 (Fig. 217); spo- 

 rophyte of Botrychitini ohliquum^ 305 

 (Fig. 289); sporophyte of Tjiiesipteris^ 

 341 (Fig. 309) ; stem, conical form of, 

 179 



Zalesskia. 129 

 Zygopterideae, leaves of, 81 

 Zygopteris, sporangia of, 209 (Fig. 199) 

 Z. corrugaia, apical meristem of leaf of, 

 109 (Fig. 104) 

 Zygote, 19, 20, 298 



CAMBRIDGE : PRINTED BY THE SYNDICS OF THE PRESS 

 AT THE UNIVERSITY PRESS 



