MR. C. B. CLARKE ON THE FERNS OF NORTHERN INDIA. 443 
beneath. Wallich’s example is glabrous above, even on the main rhachis. Sori and 
involucres small, and as in D. multidentata. 
9. D. MULTIDENTATA, Hk. & Baker, Syn. Fil. 91. Scales of the rhizome ovate acute ; 
main rhachis beneath glabrous or glandular subflocculose. Acrophorus Thomsoni, 
Moore, Ind. Fil. ii. 4. Microlepia pteropus, Bedd. Ferns Brit. Ind. t. 313. Aspi- 
dium multidentatum, Wall. Cat. 346. 
Himalaya; from Nepaul to Bhotan, alt. 5000-8000 feet, frequent. Khasia; alt. 4000— 
5000 feet, frequent. 
Rhizome usually stouter and frond larger than in D. membranulosa. Ovate scales 
often scattered about the rhachis, especially about the base of the pinnae, as in 
D. nodosa and some other species. Rhachis of frond above pubescent. Frond often 
glandulose beneath, sometimes even to the involucres. 
4. D. assamica, Hk. & Baker, Syn. Fil. 467. Scales of the rhizome ovate acute or 
acuminate; frond glabrous, glistening, subcoriaceous. D. micans, Mett. in Griff. 
no. 2790. Acrophorus assamicus, Bedd. Ferns Brit. Ind. t. 94. 
Bhotan; Mishmee, and by the Dihong, Griffith. : 
There are four sheets of this, all from Griffith’s collections, in the Kew Herbarium. 
In one example the scales of the rhizome are narrower, lanceolate acuminate. Involucre 
rather large, broader than long, much resembling that of D. immersa. 
5. D. rwwERsA, Wall. Cat. 256. Frond glabrous; sori large, impressed, clearly visible 
from the upperside of the frond; involucres large, broader than long.—Hook. Sp. 
Fil. i. 156; Hook. Fil. Exot. t. 79; Hk. & Baker, Syn. Fil. 91. Leucostegia immersa, 
Hk. & Bauer, Gen. Fil. t. 52 a. .Aerophorus immersus, Bedd.Ferns South Ind. t. 11. 
Himalaya; from Mussoorie to Bhotan, alt. 3000-6000 feet; plentiful in Sikkim. 
Khasia ; alt. 4000-5000 feet, common. Behar; Parasnath summit, alt. 4200 feet, Sir J. 
D. Hooker.—Distrib. Mts. of Malabaria (rare). Malay Peninsula and Java (seems not 
common). | 
Rhizome much underground, and there without scales; the tips above ground with 
chestnut lanceolate-acute scales. 
6. D. DAREÆFORMIS, Levinge, MS. Scales near the ends of the rhizome spreading 
acuminate caudate from an ovate or lanceolate base; frond finely eut; ultimate 
segments narrow, not very acute; involucre fugacious; sorus finally large, often 
broader than its segment.—D. Clarkii, Hk. & Baker, Syn. Fil. 91. derophorus 
Hookeri, Moore, Ind. Fil. ii. 2; Bedd. Ferns Brit. Ind. t. 95. Polypodium daree- 
forme, Hook. Sp. Fil. iv. 256 ; Hook. 2nd Cent. Ferns, t. 24; Bedd. Ferns Brit. Ind. 
t. 174; Hk. & Baker, Syn. Fil. 339. ` Gymnogrammitis, Griff. Ic. Pl. As. t. 129. 
ip l. ! 
Himalaya ; from Nepaul to Bhotan, alt. 5000-11,500 feet, frequent. Khasia; alt. 4000F- 
. 5500 feet, frequent.—Distrib. Moulmein. 
