722 



INDEX 



filmy structure, 582 ; stock, 584 (Fig. 



328) ; dilatatum (Fig. 68). 

 Hypobasal appendage of Jungermanniaceae, 



analogy with suspensor, 66 1. 

 Hypobasal tier, 666. 

 hypoderris, 617. 

 Hypolepis, 615/616; phyletic position of, 655 



(Fig. 354). 

 Hypothetical archegoniate algae of Tansley, 



137, 216. 



Imperfectly developed parts, 162. 



Indusium, 636 ; reduction of, 637. 



Initiation of sporophyte not demonstrated in 

 any one phylum, 658. 



Intercalation of sporophyte, 260. 



Interpolation of sporangia, 612. 



Irregularities of chromosome-cycle, 58. 



Isoetes, 95 (Figs. 52, 53), 307 (Fig. 155); 

 sporangia of, 318 (Figs. 165, 166) ; ana- 

 tomy of, 337 (Fig. 177) ; embryology of, 

 358 (Fig. 191) ; sporophytic budding, 57 ; 

 stele of, 337 ; secondary thickening of, 

 338 ; echinospora, 319 ; hystrix, 337 

 (Fig. 177). 



Jungermanniales, 264. 



funiperus communis, 127 (Fig. 69). 



Kaulfussia, 151, 505 (Fig. 276); sorus of, 

 512 (Figs. 278, 281, 283) ; anatomy of, 



525. 

 Khtkia, 546 (Fig. 304-). 



Laccopteris, 565, 622. 



Lastraea pseudo-mas^ v. cristata, 60. 



Leaf, "free-living," 183; its vascular supply, 



192 ; wings of in ferns, 651 (Fig. 353). 

 Leaf-formation, in Liverworts, 133 ; in 



vascular plants, 134. 

 Leaf-trace, 193 ; of Ophioglossaceae, 462, 



488 ; in ferns, 648. 

 Leaves, sterile and fertile, 87 ; polyphyletic 



origin of, 133. 

 Lepidocarpon, 704. 

 Lepidodendron fuliginostim, 338 ; Har- 



courtii, 334 (Fig. 174) ; rhodumnense, 



334 ; saalfeldense, 334 ; petticurensis, 



334; selaginoiaes, 336 (Fig. 176). 

 Lepidophloios, 304 (Fig. 152). 

 Lepidostrobus, 305 (Fig. 153) ; Brownii, 95, 



322 ; anatomy of, 335. 

 Lepidoslrobus Veltheimianus, 324 (Fig. 170). 



Leptopteris, 530. 



Leptosporangiate Ferns, symmetry of, 213 ; 

 not primitive, 496. 



Leucostegia, 615 (Fig. 340). 



Ligulatae, 291, 299; embryology of, 356; 

 " Selago" condition, 700 ; truly primitive, 

 711. 



Lily, pollen-mother-cells of, 49 (Fig. 32). 



Lindsay a, 617 ; phyletic position of, 665 

 (Fig. 354)- 



Lornatophloios macrolepidotus, 305. 



Loranthiis, 126. 



Loxsoma, systematic position of, 574 ; phyletic 

 position of, 655 (Fig. 354). 



Loxsoma Cunninghami, 105 (Fig. 60). 



Loxsomaceae, 571 ; spore-producing mem- 

 bers, 571 ; anatomy, 573. 



LoxsomopsiS) see addendum, p. xii. 



Lycopodiales, progressive disintegration of 

 stele, 231 ; general morphology of, 290; 

 spore-producing members of, 311 ; com- 

 parative anatomy of, 328 ; embryology 

 of, 340 ; summary on, 363. 



Lycopodites Stockii, 298 (Fig. 147, 321) ; 

 whorled leaves, 230 ; Gutbieri, 301 ; 

 pnmaevus, 301 ; Suissei, 301 ; ciliatits, 305 ; 

 Reidii, 305. 



Lycopodiuni) origin of sporangium, 146 (Fig. 

 75) ; leaf arrangement of, 291 (Fig. 141) ; 

 section Urostachya, 294, 313 ; section 

 Rhopalostachya, 294, 314; subgenus 

 Lepidotis, 296 ; subgenus Diphashim, 296 ; 

 Selago, 292 ; Subselago, 292 ; alpinnm, 

 sporangia, 314 (Fig. 161); annotinum, 

 anatomy of, 329 (Fig. 171); prothallus 

 of, 341 (Fig. 179) ; embryo of, 347 (Fig. 

 186) ; cernuwH) 296 (Fig. 143) ; pro- 

 thallus of, 341 (Fig. 178) ; embryology of, 

 351 (Fig. 187), 188, 101 ; gametophyte 

 of, 37 (Fig. 21 ) ; sporophyte of, 38 (Fig. 

 22); detached leaf-traces, 199 (Fig. 101); 

 chamaecyparissus, 125 (Fig. 67) ; clavatum, 

 296; sporangium of, 314; prothallus of, 

 343 ; embryo of, 347 ; reduced scales of 

 seedling, 239 (Fig. 117); compaction, 292; 

 Trencilla, 292 ; firmutn, 292 ; rigidum^ 

 292 ; Dalhousiaeamnn, 292 ; carinainin, 

 292 ; gnidioides, 292 ; squamosum, 292 ; 

 Phlegmaria, 293; (Fig. 142); varium, 

 294 ; subulatum, 294 ; munmulari folium, 

 294 ; ophioglossoides, 294 ; pinifolium, 

 294 ; inundatum, 294 ; Drunimondii, 294 ; 

 cernuum, 295 (Fig. 148) ; clavattiw, 296 ; 



i 



