554 MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 
slender, tough, far-creeping, with lanceolate-linear scales; fronds tomentose; and 
with spreading stellate rufous hairs beneath; barren fronds suborbicular, 3-1 in., 
subsessile, fertile narrow-oblong, 1-3 in.—Hook. Sp. Fil. v. 44; Hk. & Baker, Syn. 
Fil. 851. Niphobolus nummulariefolius, J. Smith; Bedd. Ferns Brit. Ind. t. 320. 
Acrostichum nummulariefolium, Swartz, Syn. Fil. 191, 419, t. 2. fig. 1; Blume, 
Enum. Pl. Jav. Fil. 102, Fl. Jav. Fil. 33, t. 11. fig. 1. 
East Bengal, alt. 0-2500 feet; Bhotan, Assam, Khasia, Cachar, generally scattered, 
nowhere common.—Distrib. Burma, Malaya. 
"Var. obovatum, (sp.) Mett. Farngatt. Polypod. 124. Barren fronds obovate, the stipes 
attaining sometimes 1-2 in.—Hook. Sp. Fil. v. 54. Acrostichum obovatum, Blume, 
Fl. Jav. 35, t. 11. fig. 3 
Khasia.—There is no authentic example at Kew of Blume's Acrostichum obovatum ; 
but some Khasi examples agree perfectly with Blume's picture ; and other Khasi examples 
show in the lower creeping part of the rhizome the barren pinn:e sessile round, while in 
the pendent parts of the same rhizome there are barren and fertile fronds mixed, the 
barren long obovate on stipes 4—$ in. 
83. P. FissuM, Hk. & Baker, Syn. Fil. 351. Rhizome short; frond attenuated at the 
base, so that the stipe is short or almost none; frond beneath tomentose, and with 
much loose ferruginous stellate woolly hair, venation obscure; sori somewhat large, 
scattered.—.P. porosum, Wall. Cat. 266; Mett Farngatt. Polypod. 128; Hook. 
Sp. Fil. v. 48. P. imysurense, Heyne, in Wall. Cat. 209. P. sticticum, Mett. Farn- 
gatt. Polypod. 128. Niphobolus fissus, Blume, Enum. Pl. Jav. Fil. 106; Blume, FI. 
Jav. Fil. 58,t. 24. N. porosus, Bedd. Ferns South. Ind. t. 183. N. sticticus, Kunze, 
in Herb. Hohenack. no. 907, in Linnea, xxiv. 257. N. Schmidianus, Kunze, in Bot. 
Zeit. vi. 121. 
Himalaya, alt. 2000—7000 feet; from Kashmir to Bhotan, very common. Khasia, 
alt. 1000-5000 feet ; very common.—Distrib. South India, Ceylon, Malay Peninsula and 
Islands. 
Scales at the base of the stipe lanceolate-linear. Stipe stellately rufous-hairy. Margin 
of the frond often with irregular lobes, 1-5 in. long. Fronds 1-1 in. broad. 
Var. floccigerum, (sp.) Mett. Farngatt. Polypod. 129. Fronds elongate, sometimes 16 by 
3 in.—Niphobolus floccigerus, Bedd. Ferns Brit. Ind. Suppl. t. 386. _ 
Khasia.—This is certainly the only Khasi floccigerum, and Mettenius has marked the 
example: it is identical with P. fisswm. Whether the figure of Blume (Fl. Jav. Fil. 
t. 26) was this I have doubts.— There is, however, but one North-Indian species here. 
34, P. rLoccuLosuM, Don, Prodr. Fl Nep. 1. Rhizome short; stipes 2-6 in., white- 
woolly ; frond suddenly or gradually narrowed at the base, with white or brown 
stellate hair beneath, much less loose than that of P. fissum, less close than that of 
P Heteractis; sori in rows of 4-6 den the main veins, —Hk. & Baker, Syn. Fil. 
