184 CHARACTERS OP TRIBES AND GENERA. 



91. CTENOPTERIS, Bl. (1828). 



Polypodium sect. Ctenopteris Blume ; Polypodium sp. auct. 

 Hook. Sp. Fil. 



Vernation fasciculate, acaulose or sarmentose. Fronds 

 linear lanceolate, sinuose, or more or less deeply pinnatifid 

 or pinnate, rigid, erect, or thin and pendulous ; segments 

 entire, dentate, or laciniated. Veins simply forked, ris'ng 

 from the mid-rib of each segment or lacinee, obscure, free. 

 Receptacles terminal. Sori punctiform, solitary, .or few in 

 each lacinae or uniserial, often becoming confluent, naked. 



Type. Polypodium trichomanoides, Swartz. 



lllust. Hook, and Grev., Ic. Fil., t. 223. ; Schk., Fil., 

 t. 10. 



OBS. This genus contains the principal number of the 

 species which represent this tribe ; as already stated, the 

 greater number of them are very uniform in appearance, 

 differing chiefly in being smooth, or more or less pilose, 

 and in the difference of the number of sori produced on 

 each lacinae or pinnae. They are natives principally of 

 the West Indies and Tropical America, but a few are 

 found in the Indian and Malayan regions. 



* Fronds sinuose pinnatifid. Segments entire. 



1. Trichomanoid Group. 



Sp. C. trichosora (Hook.) ; C. jubseformis (Kaulf.) ; C. 

 flabelliformis (Lam.) ; C. trichomanoides (Sw.), Bedd. F. 

 Brit. Ind., pi. 2 ; C. confusa, /. Sm. t 1839, Lond. Journ. 

 Bot. !., p. 194 ; C. subtilis (Kze.) ; C. truncicola (Klot.) ; 

 C. delicatula (Mart.) ; C. solidum (A'ze), Mett. Polyp. , 



t.i,'fy.i. 



2. Moniliform Group. 



C. moniliformis (Lagasc.) C. peruviana (Desv) ; C. 

 rigescens (Bory) ; C. firma (Klot.). 



