3o Ferns of British India and Ceylon. 



about half way down ; valves rounded entire. Baker, Syn. Fil. 

 p. 56. Bedd. F. B. I. t. 225. 

 Moulmein. 



2. Hymenophyllum tenellum. {KuJm.) Rhizome wide-creep- 

 ing hairy or with fine hair-like scales; stipes \-\\ inch long; 

 slender, somewhat hairy, fronds 1-2 inches long, f-i inch broad, 

 oblong to deltoid, tripinnatifid, margin entire, main rachis winged, 

 more or less furnished beneath with ferruginous hair-like scales ; 

 pinnae 4-6 jugate, deltoid, cuneate-truncate at the base on the lower 

 side, lower pinnules 1-2, cleft at tip with ligulate blunt lobes, \ line 

 broad, partial rachises and veins more or less hairy beneath, glabrous 

 above ; sori 2-6 to a pinna, terminal in the lobes ; involucre with 

 hemispherical lobes, and a cuneate entire immersed base. Baker, 

 Syn. Fit. p. 57. H. polyanthos, Bedd. F. S. I. t. 267. H. emer- 

 sum, Baker, Syn. Fil. xst ed. p. 457. 



Ceylon. (C. P. 3,360.) Differs from any form of polyanthos 

 in having the raclrses and veins hairy beneath. 



3. Hymenophyllum exsertum. {Wall.) Stipe 1-2 \ inches 

 long, slender; fronds 2-6 inches long, 1-2 inches broad, lanceolate- 

 oblong, ovate or short triangular bipinnatifid ; main rachis winged 

 above or throughout, more or less densely clothed with deciduous 

 ferruginous hairs ; lower pinnae rhomboidal, lanceolate-acuminate, 

 divided more than half way down to the rachis into simple or forked 

 linear pinnules, slightly hairy on the principal veins ; sori 2-8 to a 

 pinna, terminal Or axillary in the segments on both sides, involucre 

 divided down nearly to the base ; valves oblong, bluntly denticulate 

 at the apex. Hook. Syn. Fil. p. 58. Bedd. F S. I. t. 9. 



Himalayas and Khasya Hills, 2,000 to 9,000 feet; Birma; all 

 the Western Ghats of the Madras Presidency ; Ceylon, central pro- 

 vinces. Very common. 



4. Hymenophyllum polyanthos. (Sw.) Stipes 2-3 J inches 

 long, wingless or narrowly winged towards the apex; fronds glabrous, 

 or nearly so, 2-8 inches long by 1-3 inches broad, not crisped, ovate- 



