Ferns of British India and Ceylon. 201 
twelve or more on each side in a lobe ; soii small, close, ultimately 
confluent. Aspidium polycarpum, Bl. En. Fil. Jav, 156. Didy- 
mochlsena Hook. Syn. Fil. p. 248. Mesochlaena polycarpa, ^d'*^^^. 
F. B. 1. 1. 344. Nephrodium javanicum, Hook. Sp. Fil. iv. /. 67. 
In the Syn. Filicum this genus has been joined with Didymoch- 
1 sena ; 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) 
{Polys ^ 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 ; pinnee 4-6 inches 
long, \-l 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. 
Sw. Syn. Fil. p. 45. Hook. Syn. 
Fil. 249. Bedd. F. B. I. t. -t^S- 
Birma and the Malay Peninsula. 
(Also in the Malay Islands, Philippine?', and Tropical America.) 
POI.YSTICIIUM SEMICORDATUM. {S70.) 
