MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 439 
This var. may be related to H. denticulatum as H. badium is to H. javanicum, repre- 
senting the fully developed uncrisped form of the plant. Every variation in denticula- 
tion and hairiness, and in serrulation of the involucre-valves, from H. flaccidum up to 
H. denticulatum may be seen in my copious examples. The fronds vary in shape from 
ovate to linear-oblong.—H. Smithii, Hook. Sp. Fil. i. 97, t. 35 B, slightly differs from 
H. denticulatum, var. flaccidum, by the ultimate segments being more narrowly oblong, 
the involucre-valves more elongate, less serrate, the carpophore frequently long exsert. 
It is a fern of the Malay Peninsula and Islands; and the Khasia example referred to it 
is typical H. denticulatum, var. flaccidum.—H. ciliatum, Swartz, is stated (Hk. & Baker, 
Syn. Fil. 63) to have been found in the Hast Himalaya, and by Beddome (Ferns Brit. 
Ind. t. 305) to come from Sikkim. There is no example of it at Kew from Northern 
India; nor have I ever seen an Indian specimen. Col. Beddome obtained his North- 
Indian Ferns second-hand ; and many of the collectors mixed in their private collections 
ferns from all parts of the world. I am not sure that Col. Beddome’s picture represents 
the true plant, which exhibits needle-like, stellate, sessile and stalked hairs, not there 
indicated (see Hk. & Grev. Ic. Fil. t. 35). 
6. H. Levinen, C. B. Clarke. Frond small, narrowly oblong, not crisped, pinnatifid 
to the winged rhachis; primary segments 1l-4-lobate; ultimate segments oblong, 
remotely serrate, their midrib with many hairs and lanceolar scales of the same 
texture as the frond. (Pl. XLIX. fig. 3.) 
Sikkim; Yoksun and Neebay, alt. 7000 feet, C. B. Clarke. 
Very delicate in texture. Stipe lin. with moniliform hairs. Frond 1-2 in. long, 
more or less covered with moniliform hairs. The lanceolar scales on the midrib beneath 
are attached by their whole base; they are sometimes rare, sometimes very numerous, 
so as to form a thick coat beneath the frond. Involucres usually 1-2 at the end of the 
segment, small, glabrous, subquadrate, valves separating nearly to the base, entire or 
slightly toothed at the apex; capsules of Hymenophyllum 2-4 to each involucre, carpo- 
phore included.—This is not much like any other species of the genus. 
11. TRICHOMANES, Smith. 
1. T. wuscorpzs, Swartz, Syn. Fil. 141. Frond undivided, with a submarginal nerve.— 
Hk. & Grey. Ic. Fil. t. 179; Bedd. Ferns Brit. Ind. t. 304. 
In the tropics of nearly the whole world and in Ceylon; not yet known from Northern 
India. 
Var. sublimbatum, sp. C. Muell. in Bot. Zeit. 1854, 737. No trace of a submarginal 
nerve.—Microgoniwm sublimbatum, v. d. Bosch, Hymen. Jav. 6, t. 2. 
Khasia, alt. 5000 feet; sandy rocks near Surureem, Griffith; once collected, Nov. 2, 
1835, which day Wallich and Griffith halted in the Surureem (i.e. Sohra Reen) Bun- 
galow and devoted to collecting. ; SS, 
Griffith’s examples are very perfect; they agree altogether with the Java 7. sublim- 
. SECOND SERIES.—BOTANY, VOL. x. ? ? id 
