1250 BENGAL PLANTS. ( Actinopteris. 
in shape like the sorus, folded over it, placed one on each side of 
the narrow segments of the frond, opening towards the midrib. 
2787. ActinopTeRIs picnoroma Bedd.; F. I. C. 197; E. D 
A. 448. 
W. Behar ; Chota Nagpur 
small, densely tufted cai, resembling a miniature 
alate in dry, rocky places, and on old walls. 
1138. Nephrodium Rich. 
Herbs, tufted or creeping, small or large ; fronds very variously 
none or pinnate or decompound, membranous or herbaceous 
subcoriaceous in texture; veins free, simple or forked, or 
nee united or anastomosing. Sori ae dorsal or 
terminal on the smaller veins; indusiwm reniform-cordate, 
attached by the sinus, firm and herbaceous, less often mem- 
branous, occasionally obsolete or evanescent over some sori. 
en the indusium is obsolete or evanescent over a whole frond the 
species is apt to be referred to Polypodium, from which genus it is then 
no longer distinguishable. 
Veins all quite free :-— 
Fronds simply or, rarely, partially twice ee — 
Veins simple ; fronds simply pinn 
tipe without auricles below thei secs — 
calcaratum var. ciliata. 
calearatum var. sericea. 
Stipe with auricles below the fron calearatum var. falciloba. 
ae 
Veins forked ; cae sometimes peartially 2. pinnate ...... cochleatum. 
Fronds 3-4-pinn 
Veins more or less a 
*Veinlets of pine Lah igi anbuns united, but with no general and 
copious anastomosis :—[p. 1251 
eins of the same gro 
..crenatum. 
up not uniting among themselves, union 
confined to 2A veinlets of contiguous groups; fronds large, 
pinnate :—{p. 1251] 
{Rhizome ae -creeping :—[p. 1251] ; 
Lower pinne hardly if at all reduced pteroides. 
Lower pinne conspicuously reduced :— 
lower surface of fronds | actesty pubescent ; sori 
..unitum. 
his or wir: surface of fronds naked or nearly SO 5 Bees 
in rows midway between midrib and edge of lobe ......aridum- 
