INDEX 



AhnormdiXxiie?, oi Heliinnfhostachys^ 52 (Fig. 



344) 

 Acttnostachys, 165 

 Age and area (Willis), 332 

 Alsop/nia, 287, 293, 310; scales on prothal- 

 lus of, 303 ; sorus of, 300 

 A. aculeata^ anatomy of, 306 

 A. atrovirens^ 298 (Fig. 561) ; young sorus 



of, 301 (Fig. 564) 

 A. blechnoides^ 289 (Fig. 552) 

 A. excelsa^ ontogenetic history of, 297 ; 



vascular system of, 299 (Fig. 562) 

 A. prumata^ 283 

 A. Williamsii, 298 (Fig. 561) 

 "Amphiphloic siphonostele," 137 

 Anachoropterideae, 6, 10, 34 

 Anaclioropteris^ synangial fusion of, 39 

 Anatomy of Ahopliila aaileata, 306 ; of 

 Astcropteris^ 37 ; of Cyatheaceae, 296 ; 

 of Cyathea Iinrayana, 298 (Fig. 560) ; 

 of Dipteridaceae, 315 ; of Fossil Osmun- 

 daceae (Table), 141 ; of Gleic/wnia, 

 196; of Hymenophyllaceae, 239; of 

 Lopihosoria, 285 ; of Loxsomaceae, 254 ; 

 of Marattiaceae, loi ; of Marsileaceae, 

 180; of Matoniaceae, 222; o{ Metaxya, 

 289; of Osmundaceae, 133; oi Plagio- 

 gyria, 277 ; of Platyzoina, 200 ; of 

 Schizaeaceae, 157; oi St7-oiiiatopterzs^ 

 200 

 Anemia, 153, 157 (Fig. 441), 175 ; axis of a 

 young plant of, 1 59 (Fig. 443) ; compari- 

 son of, 174; leaf of, 156 (Fig. 440); 

 sporangia of, 163 

 A. % Atieniidiciyo?!, 5 

 A. elegans, 166 

 A. P/iy nitidis, petiole of, 161 (Fig. 445); 



sporangia of, 167 (Fig. 451) 

 A. {Trochoptcris), 165 ; fertile leaf of, 162 

 (Fig. 446) 

 Anemidtctyott, 162 



Anemiorrhiza, 160; solenostele of, 172 

 Angiopteris, 95, 124; apex of stem of, loi 

 (Fig. 395); spermatozoids of, 120; stem 

 of, 108; suspensor of, 120, 122 (Fig. 

 414); wings of leaves of, loi (Fig. 396) 

 A. evecta, sections of stem of, 102 (Fig. 

 397); sporangium of, in (Fig. 404); 

 stem of, 98 (Fig. 391) 

 A. Teysmanniana, 95 (Fig. 388) 

 Ankyropteris, 17 ; vegetative structure of, 18 

 A. corricgata, dichotomy of, 18 (Fig. 318) 

 A. Grayi, leaf-trace of, 21 ; stele of, 20 



(Fig. 321); stem of, 19 (Fig. 319) 

 A. ivestphalensis, petiole of, 26 (Fig. 326) 

 Annulus (oblique) of Plagiogyria, 275 

 "Antennae," 26, 37 



Antheridia, 4 ; of Botrychium virginiamim, 



76 (Fig. 376); of Gleichenia laevigata, 

 2 1 2 (Fig. 494) ; of G. polypodioides, 2 1 2 

 (Fig. 494); of Helmintlwstachys, 77 

 (Fig. 378) 



Apex of stem, leaf, or root, 2 ; of Tricho- 

 nianes radicans, 237 (Fig. 507) ; of stem 

 o{ Aiigiopteris, loi (Fig. 395); oi Os- 

 niunda regalis, 132 (Fig. 422) 



Aphlebia oi Diplolabis, 19 



Aphlebiae, 25 ; of Coenopterids, 97 ; oi He- 

 viitelia, 305 ; of Zygopteris Grayi, 97 



"Aphlebioid" pinnae, 306 (Fig. 567) 



Appendages, dermal, 2, 307 



Archanoiopteris, 95, 124 



Archegonia, 4 



Archegonium, fertilised, of Botrychiittn Lii- 

 naria, 83 (Fig. 383) ; in B. virginiaman, 



77 (Fig. 377); oi Helminthostachys, T] 

 (Fig. 378) ; in OpJiioglossiiin peitditlum, 

 80 (Fig. 380) ; oiOsDuiiida cinniunoinea, 

 146 (Fig. 435) 



Archetype of Ferns, 5, 40 



"Armature," 296; of Cyatheaceae, 215, 307 



Asterochlaetui, 17 ; stele of, 36 



A. laxa, stele of, 23 (Fig. 323) ; stem of, 

 22 (Fig. 322) 

 Asteropteris, 17. 34; anatomv of, 37; stele 

 of, 36 



A. 710V eboracen sis, stem of, 24 (Fig. 324) 

 Asterotheca, 100 (Fig. 393), 114 (Fig. 406) 

 Axillary branches in Hymenophyllaceae, 



237 ; buds in Botfyc/iiurn, 54 ; buds of 

 Hehniiithostachys, 54 



Balantiitvi, 263, 274 



B. Culcita, 264 (Fig. 530) 



Basipetal sequence of sporangia, 249 ; suc- 

 cession, deviations from, 271 ; succession 

 of sporangia of Cyatheaceae, 302 



Bifurcation oi Plagiogyria sonicordata, 275 



Blechnoids, 12)3 



"Borsten," 267 



"Borstenformige Zellflachen," 267 



Botrychioxylon, 25, 139; dichotomy of, 18 



Botrychiian, 42, 93; axillary buds in, 54; 

 genus, 92 ; pinna-trace of, 64 ; root of, 55 

 B. daucifolium, development of sporan- 

 gium in, 71 (Fig. 370); sporangium of, 

 72 (Fig. 371) 

 B. jenmaju, venation of, 63 (Fig. 358) 

 B. Lunaria, 45 (Fig. 337), 68 (Fig. 364); 

 fertilised archegonium and embryos of, 

 83 (Fig. 383) ; medullated stele of, 57 

 (Fig. 349) ; old embryo of, 83 (Fig. 384) ; 

 stelar structure of, 58 (Fig. 350) ; sterile 

 lamina of, 46 (Fig. 338) 



