276 Ferns of British India and Ceylon. 
base (lower ones rather more attenuated and subpetiolate) lanceolate 
or elongate-oblong, finely acuminated at the apex, the margin coarsely 
and sharply submucronate-serrated, serratures pointing a little 
forward, uniform; costae prominent beneath, of the same colour as the 
rachis and stipes, generally reddish, glabrous on both sides or 
obscurely hairy on the costa and veins beneath ; veinlets about 6-8 
pairs, of which all are connivent except 2-3 short pairs in the teeth 
of the serratures, sori in two series generally at the base of the veins 
close to the costules, but some- 
times near the centre of the 
veins, involucres reniform, very 
fugacious and only to be de- 
tected on very young fronds. 
Bedd. K B. I. t. 220. Poly po- 
dium costatum, {Wall. Herb.) 
not Brack. P. (Goniopteris) 
lineatum, Coleb. in Herb. Wall, 
and Wall. Cat. 300. Hook. Sp. 
Fil.Y. 12. Polypodium penan- 
gianum, Hook. Sp. Fil. v. 13. 
Bedd. F. B. I. t. 232 (slightly 
broader in the pinnae). 
North India, Nepal to 
Kumaon at high elevations ; 
specimens from Dr. Stuart 
(Gurwhal) have the involucre 
quite distinct ; Penang. 
13. Nephrodium Arbuscula. {Desv.) Caudex small erect and 
trunk-like, stipes tufted, short, slightly pubescent; fronds 12-18 
inches long, pinnate, lanceolate in outline, pinnse numerous close, 2-3 
inches long by about f inch broad, very shortly petioled, rather blunt 
at the apex, generally auricled at the superior base, the margin with 
shallow serratures, lower ones gradually reduced to mere deltoid 
auricles ; texture firm, herbaceous ; veins 6-8 pair, the 3-4 lower pair 
N9I4.2. 
NEPHRODIUM ArBUSCULA. [Dcsv.) 
