304 



INDEX 



of Doodia^ 1 84 ; of I))yopteris filix-mas^ 

 123 (Fig. 655); of D. phegopteris^ 130 

 (Fig, 661) ; of Hart's Tongue {Phyllitis 

 scolopendrium)^ 189, iq6 ; oiMatteitccia^ 

 154; oi M. intermedia, 155; oi Neo- 

 cheiropteris, 220 (Fig. 729) ; of NepJiro- 

 lepis, 21 (Fig. 592), 22; o{ Phyllitis, 

 1 89 ; oiP. scolopetidriuiii, 1 86 (Fig. 706) ; 

 oiPlatycerimnangolense, 205 (Fig. 715); 

 o^ Polybotrya, 134 (Fig. 666) ; of Tapei- 

 nidiujn, 26; of Woodwardia, 184 



Sorus, Asplenioid, 197; development of 

 Lindsaya, 33 ; {Dryopteris), lop-sided- 

 ness of, 124; fusion-, 24; gradate, 11, 

 273; identity of, 289; marginal origin 

 of, 50; marginal position of, 14; mar- 

 ginal position of two-lipped, 5 ; mixed, 

 12; mixed condition of, 56; oi Aero- 

 phorus stipellatics, 253 (Fig. 749); of 

 Alsophi/a, 115; of Aspleiiiiiiii, 142; 

 of AzoUaJiliculoides, 260 ; oi Bleclimoii 

 tabulare, 168 (Fig. 690) ; oiChcilanthes, 

 89; of Cystopteris, 251 (Fig. 748); of 

 C. Dtontana, 250; of Davallia. 17; of 

 Davallia, marginal origin of, 18; of 

 Deiinstaedtia, 7 ; of Z?. dissecta, 8 (Fig. 

 584); oi Diacalpe, 105, 106 (Fig. 650); 

 of Diplazinm, 146 ; of D. lanceuni, 143 

 (Fig. 672) ; oi Dryopteris decussately 130 

 (Fig. 661); of Histiopteris incisa, 51 

 (Fig. 616); of Hypoderris, loi (Fig. 

 646) ; of Hypolepis, j ; oi H. nigresceiis, 

 9 (Fig. 585); oi Lindsaya, ■^2; oi Mat- 

 teucia intermedia, 157 (Fig. 683); of 

 Odontosoria retusa, development of, 30 

 (Fig. 598); oi Peranema 106 (F'ig. 650), 

 109 (Fig. 653); of Pteridimn aqiiili- 

 num var. caudatnin, 45 (Fig. 610); of 

 Pteris, 54, 55 ; of IVoodsia, loi ; of IV. 

 obtiisa, 103 (Fig. 648) ; relation of, to 

 leaf-margin, 22; shifting of, 288 ; slide 

 of, 12, 19; zygomorphy of, 113, 127 



Sphenopterid, leaf, 141 



Spicular cells of Adiantum, 94, 247 ; of 

 Anetiitm, 244; oi Antropliyuni, 241 ; 

 of Hecistopteris, 243 ; of Vittaria, 240 



Sporangia, basipetal sequence of, 9; in 

 Pteris, 56 ; of Aspleniiim Trichomanes, 

 140 (Fig. 670); of Ceratopteris, 71; 

 of C. thaliciroides, 72 (Fig. 631); of 

 Cheiropleiiria, 207 (Fig. 717) ; oiChrist- 

 opteris tricuspis, 217 (Fig. 726); of 

 Lryptograinme, 65 ; of C. crispa, 68 ; 

 of Davallia, 19; of Dipteroids, 230; 

 oi Lindsaya, 34 (Fig. 604); of Llavea, 

 65 ; of Mohria caffrorum, 95 (Fig. 645); 

 of Notholaena, 90 ; of Perajiema, in; 

 oiPteridium aquilinum var. catidatum, 

 45 (Fig- 610); of Stenochlacna, 177; 

 of 5. sorbifolia, 179 (Fig. 700); of 

 Trisnieria, 77 



Sporangium, distal position of, 267 ; oi Dia- 

 calpe, 107 (Fig. 65 1 ) ; oi Dryopterisfilix- 

 mas, 125 (Fig. 657) ; oiMatteucia inter- 

 media, 157 (Fig. 684); of Odontosoria 

 retusa, 30 (Fig 599) ; of Platyceriiim 

 aethiopicum, 212 (Fig. 721) 



Spore-counts, of Ceratopteris, 7 1 ; oijame- 

 sonia, 70 ; of Notholaena, 9 1 ; of Pel- 

 laea, 84; of Trismeria, jy ; variability 

 of, 74 



Spore-output of Cheiropleiiria, 206 ; of 

 Dictyophyllum exile, 230 ; of D. ritgo- 

 siun, 230; of Dipteroids, 230 



Spores oi Acrosticliiim aiireum, 60; oi As- 

 pidiiim trifoliatum, lib (Fig. 658) 



Sporogonites, 267 



Sporophyll of Blcchnum punctiilatum var. 

 Krebsii, 195 ; of CJiristopteris tricuspis, 

 215 (Fig. 723); of Dictyoxiphium, 34 

 (Fig. 605); of Dipteroids, 229; oiSte- 

 nosemia aurita, 135 (Fig. 668) ; of Vit- 

 taria lineata, 240 (Fig. 740); origin of 

 Eu-Blechnoid, 195 



Sporophyll-segment of Cryptogramme cris- 

 pa, 67 (Fig. 626) 



State, Eusporangiate, 284 ; Leptosporangi- 

 ate, 284 



Stauropteris, 267, 269, 270 



Stelar structure oi Pellaca, 81 



Stele, Lindsaya-'i,\.x\\zX.\!iX^ of, 24 ; of Lind- 

 saya linearis, 31 (Fig. 600); of Tris- 

 meria, reconstruction of, 76 (Fig. 632) 



Stellate hairs oi Platyceriiim, 211 • 



Stenochlacna, 198, 279; a climbing Blech- 

 noid type, 177; fertile pinna of, 175; 

 sporangia of, 177 

 6". aciileata, 175 



S. sorbifolia, 176 (Fig. 697), 193 ; anatomy 

 of, 175 ; fertile pinna of, 178 (Fig. 699); 

 habit of, 175 ; Pimpinelloid form of leaf 

 of, 175; sporangia of, 179 (Fig. 700); 

 stock of, 177 (Fig. 698) 



Stenoloma, 29 



Stenosemia, 134, 137, 277 



S. aurita, leaves of, 135 (Fig. 667) ; sporo- 

 phyll of, 135 (Fig. 668) 



Stimuli, 286; causal, 284 



Stock of Asplenium, 141 (Fig. 671); of 

 Blechniim piinctulatum var. Krebsii, 

 182 (Fig. 703); of B. tabulare, 166 

 (Fig. 689) ; oi Alatteuccia struthiopteris, 

 154 (Fig. 679); of Stenoclilaena sorbi- 

 folia, 177 (Fig. 698) 



Stolons of Nephrolepis, 20 



Stromatopteris, 41, 275 



Struciureoi Diacalpe,io^ ; oi Hypoderris ,\o\ 



Subsoral system of Christopteris tricuspis, 

 217 



Summary of results, ib^sqq. (ch. XLix) 



Superficial derivatives, 275 ; series, 278 



Superficiales, 271, 272; indusium infcrum 



