INDEX 



339 



carp of, i88; spermatozoids of, 185; 

 sporocarp, orientation of, 190 

 Marsilea polycarpa, sporocarp-trace of, 



180 (Fig. 462) 

 M. quadri/oha, development of sporocarp 

 of, 183 (Fig. 466); habit of, 177 (Fig. 

 459); "raphe"' of the sporocarp of, 189 

 (Fig. 469); sporocarp of, 182 (Fig. 464) 

 M. salvattix, megasporangia of, 182 (Fig. 

 465); microsporangia of, 182 (Fig. 465); 

 prothallus of, 185 (Fig. 467) ; ripe sporo- 

 carp of, 182 (Fig. 465) 

 M. vestita, embryos of, 186 (Fig. 468) 



Marsileaceae, 176 sqg. (ch. xxili); anatomy 

 of, 180; comparison of, 186; dermal 

 appendages of, 187; morphology of, 177; 

 sporangium of, 184; sporocarp of, 188 



Matonia^ 7, 220; meristele of, 223; poly- 

 cycly of, 222 ; spore-counts of, 225 

 M.-Dipteris^ distribution of, 329 

 M. pecthiata, habit of, 220 (Fig. 496); 

 prothallus and young plant of, 226 

 (Fig, 502) ; sorus of, 224 (Fig. 500) ; 

 sporangia of, 224 (Fig. 501); stelar 

 system of, 222 (Fig. 498); venation of, 

 221 (Fig. 497) 

 M. sar7neniosa, stelar structure of, 223 

 (Fig. 499); venation of, 221 (Fig. 497) 



Matoniaceae, 220 sqq. (ch. xxv) ; anatomy 

 of, 222 ; comparison of, 226 ; dermal 

 appendages of, 221; habit of, 220; spor- 

 angia of, 225; spore-producing members 

 of, 223 



iMato?tidiinii, 7, 222, 226 



Matonineae, 7 



iMatteuccia, 309 



Mechanical deadlock in Gleiclienia^ 233 



Medullary system of vascular strands, 306 



Megapliyton, 100, 104 



Megasporangia of Ufafsilea salvatri.x\ 182 

 (Fig. 465) 



Megaspore oi Pthilaria, 186 (Fig. 468) 



Meristele of leaf, 2 ; of Loxsoma^ 254 (Fig. 

 523) ; of Matojiia, 223 ; of Osmimdites 

 Carttieri, 142 (Fig. 431); of Stroinatop- 

 teris, 202 (Fig.485);ofZygopterideae,2i 



Mertcnsia, scheme of branching of leaf of, 

 195 (Fig. 474) 



Mesozoic Dipteridaceae, 318 



Mesozoic Period, Ferns of, 8, 325 



Metaclepsydropsts, 17, 25, 34; rhizome of, 22 

 M. duplex'^ stele of, 2 1 



Metaxya, 292, 298 (Fig. 561); anatomy of, 

 289 ; comparison of, 292 ; sori of, 290 ; 

 sporangial development of, 29 1 ( Fig. 5 55 ) 

 M. rosirata, habit of, 288; pinna of, 289 

 (Fig. 552); sporangial stalks of, 291 

 (Fig. 554); sporangium of, 290 (Fig. 



553) 

 Microlepia, 268, 274 



M. hirta, sorus of, 272 (Fig. 540) 

 M. speluiicae, sorus of, 272 (Fig. 540) 



Microsporangia of Marsilea salvairtx, 182 



(Fig. 465) 

 "Mixed pith," 21, 25 

 Mixed type, 233 

 Mohria, 153, i57(Fig.44i), 175; comparison 



of, 174; scales of, 163; sporangia of, 



163 

 M. caffrornni^ leaf of, 155 (Fig. 439); 



sporangia of, 1 67 ( Fig. 451); sporangium 



of, 166 (Fig. 450) 

 "Monangial sorus," 163; oi Lygodiuin^ 164 



(Fig. 447) ; of Schizaeaceae, 233 

 Mount Ophir, Ferns of, 322 

 Mycorhiza, of Ophioglossaceae, 86 

 Mycorhizic fungus, 75 



Oligocafpia, 7, 210; sorus of, 211 (Fig. 493) 

 Ontogenetic history of Ahophila excelsa^ 



297 

 Onychiopsis vianteUi^ 8 

 Ophiodernia, 93 



Ophioglossaceae, 6, 8, 42 sqq. (ch. XIX), 

 229 ; comparative treatment of, 87 

 embryology of, 80; fertile spikes of, 66 

 gametophyte of, 75; genera of, 93 

 habit of, 42-7 ; leaf-traces of, 62 

 meristems of, 54; mycorhiza of, 86 

 phyletic arrangement of, 91; sporangia 

 of, 66, 74; stem structure of, 57; vascular 

 anatomy of, 55; venation of, 43 (Fig. 335) 

 Ophioglossiim, 42, 93; development of fertile 

 spike in, 66; embryogeny in the genus, 

 85; genus, 92; prothallus of, 78; rela- 

 tively late and derivative, 89 ; root of, 

 55; spike, pleiomery of, 90; sporan- 

 gium of, 67; synangial state of, no; 

 variety in detail of, 49 



O. Bergianum^ 50 (Fig. 342); root of, 56 

 (Fig. 348); stock of, 61 (Fig. 354) 



O. intermedium^ 50, 53 ; degradation of, 

 90 



O. 7nolucca?iiim, embryogeny of, 86 



O. palinatum, 68 (Fig. 364); distended 

 sappy stem of, 89 (Fig. 385); spikes of, 

 50, 51 (Fig. 343), 52, 65 (Fig. 362); 

 vascular system of, 61 (Fig. 355) 



O. pendulum, archegonium in, 80 (Fig. 

 380); sex-organs of, 119 (Fig. 411); 

 spikes of, 52 (Fig. 344), 69 (Figs. 366, 

 367); stock of, 62 (Fig. 356) 



O. reticulatum, sporangium of, 70 (Fig. 

 368) 



0. simplex, 50, 53 (Fig. 345); degradation 

 of, 90 



O. vulgatum, embryogeny of, 84 ( Fig. 386) ; 

 habit of, 47 (Fig. 340) ; leaf-trace in, 

 60; prothallus of, 79 (Fig. 379); shoot 

 of, 48 (Fig. 341); sporogenous tissue of, 

 70 (Fig. 369); very young spike of, 68 

 (Fig. 365); young leaf of, 67 (Fig. 363); 

 young sporeling of, 85 (Fig. 387) 

 Orientation ol Marsilea sporocarp, 190 



