34 Ferns of British India and Ceylon. 



Mr. Clarke seems to doubt the Sikkim locality, but my speci- 

 mens received from Dr. Jerdon quite agree with the type. 

 ** Margin of the frond serrulate. 



7. Hymenophyllum Simonsianum. (Hook) Stipe slender, 

 wiry or winged, naked or with a few ferruginous hairs, 1-2 inches 

 long ; fronds linear-oblong, 2-6 inches long, up to 1^ inch broad, 

 pinnatind to the winged rachis ; the primary segments fan-shaped, 

 1-6 lobate, ultimate segments broadly oblong, serrulate; sori 1-4 

 terminal on the divisions of the upper pinnae, involucre broadly oblong, 

 divided nearly to the base ; valves serrulate. Hook. Syn. Fil. p. 68. 

 Bedd. F. B. I. t. 281. 



Sikkim, 4,000-10,000 ; common. Khasya Hills. 



8. Hymenophyllum Smithii. (Hook.) Stipe 1-2 inches long, 

 wiry naked or slightly tomentose ; fronds oblong-acuminate, 3-8 

 inches long, 2-3 inches broad, bipinnatifid ; rachis winged above, 

 ciliated below ; pinna? oblong-triangular, with a winged rachis and 

 simple or 1-4 times forked linear-serrulate segments; sori 1-4 ter- 

 minal on the segments of the pinnae on both sides ; involucre oblong, 

 small, divided half down ; valves entire. Hook. Syn. Fil. p. 69. 

 Bedd. F. B. I. t. 277. 



Malacca and Penang. 



(Also in Philippines and Java.) 



9. Hymenophyllum denticulatum. (Sw) Stipe 1-2 

 inches long, erect, ferruginously hairy or naked, often winged towards 

 the apex ; rachis winged throughout ; fronds 2-3 inches long by 1 or 

 more broad at the base, ovate to narrowly oblong, glabrous, or with 

 scattered hairs, slightly crisped, pinnatind to the rachis ; primary 

 segments pinnatind, secondary ones oblong, sometimes again divided, 

 serrulate on the margin, involucre ovate, glabrous or scabrous, or 

 rarely slightly hairy ; valves serrulate, or pectinate. Swartz, Syn. 

 Fil. t. 148 and 2,1 S- Hook. Syn. Fil. p. 70. Bedd. F. B. I. t. 278. 

 Clarke, Ferns of North India, p 438. 



