302 Ferns of British India and Ceylon. 
texture membranaceous, surfaces glabrous ; main veins distinct to 
margin ; areoles with free included veinlets ; sori copiously scattered, 
terminal or compital. Mett. Kuhn. Lin. 36, /. 124. Bakei'^ Hook, 
Syn. Fil. 506. 
Malacca. 
6. DiCTYOPTERis HETEROSORA. {Baker) Stipe short brown, 
with spreading linear scales ; fronds oblong-spathulate, 2-3 feet long, 
simply pinnatifid, the lowest foot only a narrow wing to the rachis, 
above this 3-4 pairs of distant oblong-lanceolate acuminate pinnse, 
\\-2 inches broad at middle, confluent in a narrow wing, the lowest 
simple or bipartite, texture thin but firm, surfaces glabrous, ribs naked 
brownish ; main veins distinct to edge, 3-4 lines apart with distinct 
arches between them, and copious small areoles with free included 
veinlets j sori very abundant, small irregular, often confluent. Baker, 
Hook. Syn. Fil. 506. 
Malacca, (habit of Aspidium vastum.) 
Ereinobryoid series. Stems articulated at the point of junction with 
the rhizome ; sori generally, not always, terminal on the veins, 
GENUS LX.— POLYPODIUM. {Linn) 
{Polys, many ; potis, foot ; polypus, — the rhizome when destitute of 
fronds, having the appearance of some kinds of sea polypus.) 
Veins all free ; sori naked, generally punctiform, round, rarely 
oblong, generally terminal on the veinlets, or more rarely below the 
apex ; fronds simple or pinnatifid or rarely pinnate or more 
compound. 
* Fronds entire. 
I. PoLYPODiuM PARASiTicuM. {Mett) Rhizome erect, rarely 
creeping ; stipes tufted, subsessile, hairy or fuscous , fronds 2-3 
inches long, i- f inch broad (rarely more), narrow linear (rarely 
abnormally pinnatifid), blunt at the apex, gradually narrowed at the 
