438 MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 
Var. badium, (sp.) Hk. & Grev. Ic. Fil. t. 76. Frond hardly crisped.—Hook. Sp. Fil. i. 
105; Bedd. Ferns Brit. Ind. t. 282; Hk. & Baker, Syn. Fil. i. 60, not of Wall. 
The figure of Hk. & Grev. is taken from an example with large ultimate segments, 
and the stipe winged to the base, not the same as Wall. Cat. 172. 
** Margin of frond serrulate. 
4. H. Srmonstanum, Hook. 2nd Cent. Ferns t. 13. Stipe with few ferruginous hairs, 
frond pinnatifid to the winged rhachis; the primary segments 1—4-lobate; ultimate 
segments broadly oblong, serrulate, often 2 millims. broad.—Hk. & Baker, Syn. Fil. 
68; Bedd. Ferns Brit. Ind. t. 281. 
Khasia, Dr. Simons. Sikkim; alt. 4000-10,000 feet, common; extending from the 
plains to Kinchinjunga, and from East Nepaul to West Bhotan (and doubtless much 
more widely). ? 
Stipe winged at the top or not. Frond 6 in. linear oblong, or round-ovate, 1l in. in  — 
diam., and then full of fruit. Surface of the frond beneath usually glabrous; but ferru- — - 
 ginous long hairs occur sometimes. Involucre subquadrate, often 2 millims. long. This 
fine species is at once recognized in Sikkim by its large size, broad segments, and large 
involucres. 
5. H. DENTICULATUM, Swartz, Syn. Fil. 148 & 375. Frond slightly crisped, pinnatifid to 
the winged rhachis; primary segments pinnatifid ; secondary segments oblong, some- ` 
times again divided, serrulate on the margin, the serrulation often continued to the ` e 
wing of the main rhachis; involucre ovate, with serrulate valves.—H ook. Sp. Fili 
101; Bedd. Ferns Brit. Ind. t. 278; v. d. Bosch, Hymen. Jav. 39, t. 29; Hk. & ` 
Baker, Syn. Fil. 71. Trichomanes denticulatum, Blume, Enum. DL Jay. Fil. 226.  . 
Khasia ; alt. 4000-5000 feet, frequent ; plentiful in and round Cherra Station. Bhotan, — 
among the Duphlas, Col. Hutchinson.—Distrib. Burma, Malay Peninsula and Islands. ` 
Stipe usually with some fine scattered ferruginous hairs (even in the Malacca ex- — — 
amples), rarely naked. Wing of the main rhachis usually produced to the base of the — — 
frond, and more or less upon the stipe. Frond varying from ovate to narrowly oblong, | 
sometimes glabrous, sometimes with scattered hairs, especially on the main rhachis. _ 
Margin of the ultimate segments more or less acutely serrulate, generally through their ` ` 
whole outline. Involucres usually (in the Khasia examples) glabrous on their backs, — - 
sometimes scabrous, rarely with one or two hairs; the margin of the valves strongly ser- 
rulate, or often pectinate. 
Var. bride: sp., Y. d. Bosch ; Bedd. Ferns Brit. Ind. t. 276. Main rhachis often with ` 
much ferruginous hair beneath; frond flaccid, hardly at all crisped; ultimate seg- ` 
ments slightly serrulate in their upper portion only, the main rhachis quite entire; ` 
valves of the involucre slightly serrulate at the summit. H. khasianum, Hk. » 
Baker, Syn. Fil. 464. (Pl. KLIX. fig. 2.) | 
Khasia ; Cherra Station, growing with the type. - 
