Ferns of British India and Ceylon. 



20 i 



twelve or more on each side in a lobe ; sori small, close, ultimately 

 confluent. Aspidium polycarpum, Bl. En. Fil. Jav. 156. Didy- 

 mochhena Hook. Syn. Fil. p. 248. Mesochlsena polycarpa, Bedd. 

 F. B. 1. 1. 344. Nephrodium javanicum, Hook. Sp. Fil. iv. p. 67. 



In the Syn. Filicum this genus- has been joined with Didymoch- 

 loena ; but, as Mr. Smith has pointed out, it is really a Nephrodium 

 with the indusium elongated. 



Malay Peninsula. 



(Also in the Malay Islands.) 



GENUS XLIX.— POLYSTICHUM. (Roth.) 



(Folys, many ; stichos, order.) 



Sori subglobose, dorsal or terminal on the veinlets ; indusium 

 orbicular, fixed by the centre ; veins all free ; texture generally 

 coriaceous and teeth generally awned. 



I. POLYSTICHUM SEMICOR- 



datum. (Sw.) Stipes scattered, 



6-12 inches long, fibrillose at the 

 base; fronds 2-3 feet long sim- 

 ply pinnate ; pinnas 4-6 inches 

 long, -s-f inch broad, nearly 

 entire, acuminate, cordate or 

 truncate at the base ; texture 

 herbaceous or somewhat firm ; 

 surfaces naked and rachis nearly 

 so ; veins pinnate, the lower ones 

 ending short of the margin •; sori 

 in 1-3 rows on each side, the 

 inner one the most constant 

 and regular, close to the midrib. 

 . .'.j 7/. Fil. p. 45. J look. Syn. 

 Fil. 249. Bedd. F. B. /. /. 35. 



J;irma and the Malay Peninsula. 



(Also in the Malay Islands, Philippines, and Tropical America.) 



N°IOI 



POLYSTICHUM SEMICORDATUM. [Sw.) 



