INDEX 



353 



Increase by spores, 206; cambial, 178; in 

 size, 188; primary, 178 



Indusial flange, 238 ; hairs, 239; protections, 

 62 



Indusium, 234, 236 (Fig. 236), 237, 238, 240 ; 

 basal, 237 ; oi Blechnitm^ 238 ; oiPterzs, 

 238; peltate, 238; prototype of, 235; 

 reniform, 238 ; types of, in Polypodia- 

 ceae (Fig. 236) ; vestigial lower, 222 



Initial cells, 105, 107 ; cells of leaves, 109 



Intercellular spaces, 180, 184 



Internal endodermis, 130, 131, 133; phloem, 



145 

 Intrastelar pith, 127, 188 

 Inversicatenales, 162 

 Involution of endodermis, 145 

 Isolated tracheides, 126 



Juvenile leaf of Todea sitpej-ba^ 85 (Fig. 76); 

 leaves oi Anemia adiantijolia, 85 (Fig. 

 "]"]) ; leaves of Osniunda regalis^ 87 

 (Fig. 80); "^X^wVoi Gleicheniapectinata, 

 188 (Fig 179) 



Khikia exi/is, fertile pinnule of, 252 (Fig. 

 248) 



Lady Fern {At/iyfhiin), 26 



Lasiraea pseudo-ziias, var. cristata apospora^ 

 haploid sporophyte of, 326 



Lattice-work, 149 



Leaf, 7 ; angular, ^-^ ; apex of, of Osmunda, 

 III (Fig. 108) ; apical meristem of, 109 

 (Fig. 104) ; architecture of, 61, 81 ; 

 climbing, 38 (Fig. 43); definition of, 

 81 ; fertile, of Leptochilus iricitsfiis, 234 

 (Fig. 233); first, 311; juvenile, of To- 

 dea siiperba^ 85 (Fig. 76) ; relation of, 

 to axis, 315; vascular tissue of, 61; 

 venation of, 61 ; young, of Ceratopteris^ 

 9 (Fig. II) 



Leaf-architecture, 81 



Leaf-blade, cutting of, 83; venation of, 83 



Leaf-fall, ■}>?> 



Leaf-margin, overlapping of, in Matteicccia 

 intermedia^ 238 



Leaf-trace, 160, 161, 162, 163 (Fig. 156); 

 in Thamnopteris Schlechtendalii, 162 

 (Fig. 155); origin of, Lophosoria quad- 

 ripinnata, 163 (Fig. 156) 



Leaves, arrangement of, on axis, 67 ; dif- 

 ferentiation of, 49 ; dimorphic, 46 (Fig. 

 53); initial cells of, 109; juvenile, of 

 Anemia adiantifoHa, 85 (Fig. 7j); ju- 

 venile, of OsmiDida 7'cgalis^ 87 (Fig. 80); 

 segmentation at margin of, no (Fig. 

 105); of Zygopterideae, 81; wings of, 

 of Angiopteris^ 112 (Fig. 109); young, 

 of Schizaea rupestris^ 220 (Fig. 213) 



Lecanopteris carnosa, 43 (Fig. 50) 



Leptochilus tricnspis, fertile leaf of, 234 (Fig. 

 233) ; soral region of, 233 (Fig. 232) 



Leptosporangiate Ferns, 244; sporangium, 



270 

 Life-history of a Fern, i 

 Limiting factor, 181; surfaces, 178 

 Lindsaya lancea^ fusion-sori of, 228 (Fig. 



225) 

 L. linearis^ stele of, 146 (Fig. 136) 

 L. scandens^ sections through node of, 147 



CFig. 137) 

 Lindsay a-zor\d^\i\on, 146 

 Linear hairs, simple, 198 

 Liverworts, sporogonia of, 117 

 Lonchitis pitbescens, 173 (Fig. 169) 

 Lophosoria, pinna-trace in, 174 (Fig. 170) 

 L. qieadripin7tata, origin of leaf-trace in, 



163 (Fig. 156) 

 Loxsoma, 145 ; annulus of, 255 ; meristele 



of, 165 (Fig. 158) 

 L. Cunttinghamti, mature sorus of, 214 



(Fig. 206) ; plan of stelar construction 



of, 145 (Fig. 135); vascular system at 



node of (Fig. 130) 

 Lygodium, monangial sorus of, 235 (Fig. 



235) 

 L. czrcinattim, sporangium of, 265 (Fig. 



260) 

 L. scandens,dor?,\v&r\\.ra\ and dichotomous 



rhizome of, 67 (Fig. 58) 



Macroglossum, embryo of, 303 (Fig. 287) . 



Male organs (antheridia), 15 



Male Shield Fern {Dryopteris Filix-mas, 



Rich ), I 

 Marattia, synangia of, 249 



M. Douglasii, antheridium of, 288 (Fig. 



278) ; archegonia of, 287, 288 (Fig. 278) 

 iM. fraxinea, sporogenous tissue of, 258 



(Fig. 254) 

 Marattiaceae, 55, 135 ; embryos of, 303 (Fig. 



286); soriof, 211 (Fig. 202); suspensors 



of, 303 

 Margin ot leaves, segmentation at, 1 10 (Fig. 



105) 

 Marginal cells, 109; origin of sorus of /"/t'r/- 



diiem, 222; pinna-trace, 173; position 



of sorus, 217,219; type of pinna-supply 



in Pteris innbrosa, 172 (Fig. 167) 

 Marginales, 140 

 Marsilia, 48 



M. Driim/no/idii, parthenogenetic embryo 



of, 325 (Fig. 303) 

 Marsiliaceae, 55 



Massulae, 261, 268, 269 (Fig. 264) 

 Matonia, 154 



M. pectinata, stelar system of, 154 (Fig. 



148) 

 Matoniaceae, 54 



Alatteiiccia intermedia, overlapping of leaf- 

 margin in, 238 ; sorus of, 229 (Fig. 226) 

 M. Struthiopteris, antheridium of, 285 



(Fig. 276) ; archegonium of, 288 (Fig. 



279) 



23 



