Ferns of British India and Ceylon. 145 



numerous, approximate, horizontal sessile, oblong obtuse, upper half, 

 obscurely serrated, cuneate at the base, superior base truncated sub- 

 auriculate, inferior margin cut off as it were by a straight line ; 

 terminal pinna elongated, pinnatifid below ; costa and veins sunk, 

 obsolete ; sori 2-6, oblong oblique, occupying the disc of the frond 

 between the middle and the apex ; involucre firm, membranaceous ; 

 rachis ebony-black, terete, rigid, sparsely setose. Hook. Sp. Fil. iii. 

 143. Syn. Fil. p. 19S. Bedd. F. B. I. t. 2S8. 

 Penang. 



8. Asplen t ium septentrionale. {Lin. under Acrostic/turn). Small 

 caudex creeping, densely radiculose scarcely paleaceous ; stipes 

 numerous, tufted, 3-6 inches high, erect, flexuose, green brown at the 

 base ; fronds 1-2 inches long, coriaceous, glabrous, pinnated ; pinna? 

 \-i inch long ; long-petioled, linear or linear-lanceolate, subungui- 

 culate, often very acute or acuminate, rarely solitary, generally 2-3, 

 alternate entire or forked ; lateral segments small subulate, rarely 

 laciniated (2-3 acuminate segments) ; veins forked parallel ; sori very 

 long ; involucres also much elongated, attached near the margin. 

 Hook. Sp. Fil. iii. 174. Syn. Fil. p. 198. Bedd. F. B. I. t. 60. 

 Acrostichum septentrionale, Linn. Sp. PL 1524. Acropteris, Link. 



Northern India, Kashmir, 9,000-12,000 feet elevation; Gur- 

 whal 8,000 feet. 



(Also in Arctic and Alpine Europe, Asia, and America.) 



9. AsPLENiu.M longissi.mum. (Blume.) Rhizome short-creep- 

 ing ; stipes tufted 3-12 inches long, strong erect, blackish, nearly 

 naked ; fronds 2-8 feet long, linear or lanceolate elongate, proliferous 

 and rooting at the apex; pinnse horizontal, very numerous, 2-4.2 

 inches long \— | inch broad, acuminate, the two sides nearly equal, 

 with a distinct central midrib, the edge slightly toothed, the base 

 on both sides often auriclcd ; texture herbaceous ; rachis dark- 

 led strong, slightly scaly ; veins forked oblique; sori numerous 



in two regular rows on each side the midribs, and reaching nearly to 

 the edge. Blume^ En. Plant, far. Fil. 178. Hook. Syn. Fil. 199. 



