722 



INDEX 



filmy structure, 582 ; stock, 584 (Fig. 



328); dilatattim (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. 



hoetes, 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 



Jungermanniales, 264. 



f mi i perns foiiimnnis, 127 (Fig. 69). 



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

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



Klukia, 546 (Fig. 304). 



Laccopteris, 565, 622. 



Lastraea pseudo-mas, \. cnstata, 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. 

 I. cuves, sterile and fertile, 87 ; polyphyletic 



origin of, 133. 

 I.i pidocurpon, 704. 

 Lepidodendron fuliginosum, 338 ; //<;;- 



court ii, 334 (Fig. 174) ; rhodumnense, 



334 ; saalfelden.se, 334 ; petlicurensis, 



334; selaginoiaes, 336 (Fig. 176). 

 Lepidophloios, 304 (Fig. 152). 

 Lepidoslrobus, 305 (Fig. 153) ; Rrownii, 95, 



322 ; anatomy of, 335. 

 Lepidoslrobus 1 'cltheimianus, 324 (Fig. 170). 



Leptopteris, 530. 



Leptosporangiate Ferns, symmetry of, 213 ; 



not primitive, 496. 

 J.i'itcostegia, 615 (Fig. 340). 

 Ligulatae, 291, 299; embryology of, 356; 



" Selago " condition. 700 ; truly primitive, 



711. 



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

 Lindsaya, 617 ; phyletic position of, 665 



(Fig- 354). 



Loinatophloios macrolepidotus, 305. 



Lorantltus, 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. 



I.ycopodilt-s Stockii, 298 (Fig. 147, 321); 

 whorled leaves, 230 ; Gnthieri, 301 ; 

 primacTiis, 301 ; .S'///.w/, 301 ; cilia! us, 305 ; 

 A', it/it, 305. 



Lycopodinni, origin of sporangium, 146 (Fig. 

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

 section Urostachya, 294, 313; section 

 Rhopalostachya, 294, 314; subgenus 

 Lcpidotis, 296; subgenus Diphasium, 296; 

 Selago, 292 ; Subselago, 292 ; alpiniun, 

 sporangia, 314 (Fig. 161) ; annotinum, 

 anatomy of, 329 (Fig. 171); prothullus 

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

 186) ; fcrniiiini, 296 (Fig. 143); pro- 

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

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

 f> 37 (Fig. 21) ; sporophyle of, 38 (Fig. 

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

 chamaecyparissus, 125 (Fig. 67); flai'atinii, 

 296; sporangium of, 314; prothallus of, 

 343 ; embryo of, 347 ; reduced scales of 

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

 Trcncilla, 292 ; /iniinin, 292 ; ri^'iifinn, 

 292 ; Dalhousiaeanurn, 292 ; carinutuni, 

 292; gniilitiidi's, 292; s<juaiosni, 292; 

 riil,'g>nari(i, 293; (Fig. 142); variitin, 

 294 ; snhnlctlnin, 294 ; iinintnnlari folium, 

 294 ; ophioglossoides, 294 ; pinijolhim, 

 294; inundatum,29^\ Drummondii,2f)$\ 

 Ci'nntitin, 295 (l''ig. 148); clavatnni, 296; 



