llii. GEITEUA OP PEEKS : 



been associated. The authentic specimens we tave exfunined, 

 fSb. Sewwrd), seem to have more structural accordance with 

 the Pteridea^ though their aspect is certainly Tittarioid. 

 Ex. : H. seolopendrina, Presl. 



62. PTERIS, lAmtcBus, Gen. PI. 780. 



Theltpteris, j4rfa«s(m ; Oetosis, JVecier j CnrciNAtis, Gleditaeh; Mo- 

 HOGONXA, Presl; EupTEEis (1), Agardh; Obnithopteeis, Agardh; Pteei- 

 DOPSis, Link; Eupteeis (2), JFeipmon; IjYTOSEjmos, Klotzsch ; PrcKO- 

 DOEiA, Fresl ; Lonchithjium, Fee; Allosori Bp., Presl; Phobolobi 

 s^.jDesvaux; CiSSEBEEEiB sp., J. Smith; Pell^^ sp., Fee; CssxIaAJS- 

 THis sp., iTuTize; LoNCHiTiDissp.,£iB7W8iMj DoBYOPTEBiDis sp.,XZo<2acA; 

 Plattiomatis sp., J. Smith. 



Sori indusiate, marginal, linear, continuous or interrupted ; the 

 receptacles linear transverse, uniting the apices of the veins. 

 Indttsium of the same form, membranaceous. Yeiris simple or 

 forked from a central costa ; venules free. 



I^onds varying from pedate to decompound, often large, 



herbaceous or coriaceous. Khizome short erect, or creeping, 



sometimes much elongated. — An extensive genus, comprising 



species of greatly varied aspect. 



§ Eupterig, Agardh. — Vernation, terminaL 



P. semipinnata, lAn. 

 P. scabenila, Sichard* 

 P. gracilis, Pde. 

 P. hastata, Sio. 

 P. calomelanos, Su>. 



§ Omithopteris, Agardh. — ^Vernation lateral. 



Ex.: P. aqnilin% Lin. | P. esculenta, Forsf. 



Ex. : P. g^raniifolia, Maddi. 

 P. longifolia, Lin. 

 P. crenata, Sio. 

 P. asperieaulis. Wall. 

 P. tremula, Brown. 



(b) Lower veins only arcuately cmastomosing. 

 53. CAMPTERIA, Presl, Tent. Pterid. 146. 

 Ptbbidis sp., Atict. ; LiTOBEOCHxs sp,, Auct. 



Sori indusiate, marginal, linear, continuous ; the receptacles 

 linear transverse, uniting the apices of the veins. Ijidusium of 

 the same form, membranaceous. Veins simple or forked from a 

 central costa, the lowest pair only arcuately anastomosing, form- 

 ing a series of elongated costal areoles ; v&nules free. 



