1 88 Ferns of British India and Ceylon. 
to " polypodioides," but until the plant is better known, I think it 
safer to follow Mr. Thwaites's view. ■ 
Young plants of latifolium often produce simply pinnate fronds, 
which in some of the less cut varieties can scarcely be distinguished 
from sylvaticum, and I think Mr. Clarke's Sylhet specimens, referred 
by him to sylvaticum, belong to latifolium. 
19. DiPLAZiUM TRAVANCORicuAi. {Bedd.) A very large fetn 
with trunk-like caudex, secondary pinnae 20-24 inches long, 
lanceolate, somewhat attenuated at the base, the apex acuminate or 
caudate, quite pinnate towards the base, the lower pinnules being 
petioled, the upper ones gradually becoming sessile, then decurrent, and 
the pinnas terminating with a long broad pinnatifid apex, which for 
the upper 8 inches or so is only very shallowly incised, lowest 2 or 3 
pinnules smaller than the adjoining ones, next in order 2^-t,\ inches 
long, by about i inch broad, lanceolate in shape, very slightly serrated 
towards the apex ; veins numerous, prominent and pinnate from a 
prominent central costa ; texture subcoriaceous ; surfaces glabrous 
and striated ; sori commencing a little distance from the midrib, and 
not nearly reaching the margin. 
Travancore Hills ; Athraymally forests, a very fine new species. 
20. DiPLAZiuM UMBROSUM. SiiiitJi, Wider Afhyriu7?i.) 
Stipes I foot or more long, strong, erect, clothed often with dark 
scales, and sometimes muricate ; fronds 3-5 feet long, 12-18 inches 
broad ; primary pinnae ovate-lanceolate to deltoid-lanceolate, up to 18 
inches long ; secondary pinnce very various, sometimes small and only 
pinnatifid (in the simpler forms), to quite, pinnate with the pinnules 
pinnatifid in the larger and more compound forms ; texture herba- 
ceous; veins pinnate ; veinlets simple or forked ; sori generally short 
and near the midrib ; indusium very variable, often all asplenioid or 
diplazioid, often all allantodioid and mixed with very short sori. 
Hook. Sy?i. FiL 229 and 489 (under Athyrium.) 
I follow Hooker and Baker, and refer here a good many forms, 
firstly because I now believe they are so closely allied that they really 
are only varieties of one species, and that some of them run one 
