176 Ferns of British India and Ceylon. 
or obliquely cuneated base, linear-oblong, acuminate, falcate, sharp'y 
and subspinulosely serrated, terminal one petiolate and similar to the 
rest, or larger and broad and pinnatifid at the base from being 
formed of dwarfed and confluent , pinnae, very coarsely serrated 
towards the finely acuminated apex ; veins very patent, immersed, 
generally twice dichotomous, the lowest superior branch (arising from 
near the costa) bearing the linear sorus along its whole length, rarely 
diplazioid, and only from 1-3 at the superior and mostly truncated 
but not auricled base ; involucres 
narrow, iirm, membranaceous. 
Bl. En. FiLJav. 176. Hook. Sp. 
Fil. iii. 238. Bedd. F. B. I. t. 196. 
Birma and the Malay Penin- 
sula. 
(Also in the Malay Islands and 
the Philippines.) 
5. DiPLAZIUM PORRECTUM. 
( Wall.) Caudex erect or ascending; 
stipes tufted, 6-12 inches long; 
fronds 8-10 inches to \\ foot long 
deltoid-oblong, pinnate ; pinnae 
horizontal, numerous, 4-6 inches 
long, petiolate or sessile, and con- 
fluent at the acuminated pinnatifid 
apex, from a broad truncated and 
auricled or generally quite hastate 
base (having a distinct auricle above 
and below), linear-lanceolate, obtuse or acuminate, lower ones more 
or less deeply pinnatifid, intermediate ones obtusely dentate, 
uppermost ones entire at the margins ; veins patent, pinnated in 
the auricles, the rest once or twice forked ; sori linear, elongated, 
confined to the superior or basal veinlet, and extending its whole 
length, or on the two outer ones, mostly diplazioid; involucres 
membranaceous when young. Wall. Cat. 204, Hook. Sp. Fil. iii. 
250. Bedd. F. B. I. t. 245. 
N^85. 
DIPT.AZIUM rORFECTUM. 
[Wall.) 
