4 
Ferns of British India and Ceylon. 
wing into close entire ligulate blunt segments, upper gradually 
smaller, reflexed ; texture subcoriaceous, both surfaces glabrous, the 
lower green or glaucous; veinlets once forked; sori medial, 12-20 
to a segment. Bedd. F. B. I. t. 346. Hook. Sp. Fil. p. 449. 
Malacca. 
4. Glejchenia LINEARIS (^Bur m. under Folypodiw7i). Stipes zigzag, 
repeatedly di- or trichotomous, the ultimate branches bearing a pair 
of forked pinnos ; a distinct pair of pinnae also arises from the base 
of the forked branches, pinnules usually glaucous beneath, usually 
entire with recurved margins, texture hard, veinlets usually three- 
branched from the base, the centre one being often forked or 
pinnate. Bedd. F. S. I. t. 74, as dichotoma. Gl. dichotoma, Willd. 
Hook. Sp. Fil. p. 15. Polypodium lineare, Buiin. Fil. Ind. 235, /. 67, 
fig. 2, oldest specific name. This fern has long been known under 
the name of dichotoma, which, however, must be dropped, as there 
is an older specific name. 
Mountains of southern India and Ceylon, up to 6,000 feet, 
Sikkim, Bhotan, Nepal, Kumaon, Khasya, &c., up to 5,000 feet. 
Malay Peninsula. 
(Also in Japan, Tropical Australia, America, Polynesia ) 
SUB-ORDER II.— POLYPODIACEJE. 
Sori dorsal or marginal, subglobose, of many capsules, with or 
without an indusium, usually pedicellate, more or less completely 
surrounded with a jointed vertical and elastic ring, and bursting 
transversely (except in Hymenophyllea^). 
A. — iNVOLUCRATiE. — Sori furnished with an indusium (except 
in Alsophila), Tribes Cyathete to Aspidieae. 
TRIBE I.— CYATHE^. 
Sori dorsal, globose, often at or near the forking of a vein ; 
capsules numerous, often very compact sessile or stalked, generally 
on an elevated receptacle, often mixed with hairs, obovate usually 
with a broad, vertical, or sub-oblique elastic ring ; indusium (none in 
