44 Ferns of British India and Ceylon. 



Var. ft anceps. (Wall.) Frond smaller; stipe often winged 

 to the base, primary segments pinnatifid or somewhat 2-pinnatifid ; 

 lips of the involucre slightly broader than the tube. Clarke, F. N. 

 I. p. 441. 



Sikkim and Khasya, frequent. 



17. Trichomanes auriculatum. {Bin me.) Rhizome strong, 

 wide-creeping, tomentose ; frond nearly sessile, 1-2-scarcely 3-pin- 

 natifid, 6-12 inches long, 1-2 inches broad, rachis more or less 

 winged, pinnae shortly stalked, ovate-rhomboidal, obliquely cuneate 

 at the base, irregularly pinnatifid half down or more, ultimate seg- 

 ments ovate entire with flabellate nerves, or narrowly oblong one- 

 nerved, texture subcoriaceous ; sori 2-12 to a pinna, the tube nearly 

 or quite exserted, the mouth truncate. Blume, Fl. Jav. Fit. p. 225. 

 Hook. Syn. Fil. p. 82. Bedd. F. B. I. t. 182. 



Sikkim, Bhotan, 2,000-7,000 feet, frequent; Khasya, 3,000- 

 5,500 feet, common; Cachar. 



(Also in Japan, Formosa, Philippines, Java, and Guiana.) 



18. Trichomanes javanicum. (Blume) Caudex tufted with 

 strong wiry roots ; stipe 1-4 inches long, wiry, erect, naked, or 

 villous ; fronds 2-8 inches long, 1-2 inches broad, ovate-lanceolate, 

 acuminate, simply pinnate, pinnae oblong serrate, or linear fimbriate, 

 texture subcoriaceous ; veins numerous, close, central costa not 

 clearly marked or continuous to the apex ; sori 1-4, placed in the 

 axils of the linear segments on the upper side of the pinnae ; tube 

 free, the mouth broadly dilated, but not two-lipped, receptacle much 

 exserted. Bl. En. PI. Jav. Fil. 224. Hook. Syn. Fil. p. 83. Bedd. 

 F. B. I. t. 180. 



Chittagong, up to 1,000 feet; Cachar; Malay peninsula. 

 (Also in Borneo, Java, Polynesian Islands, and Madagascar.) 



19. Trichomanes rigidum. (Swartz.) Stipe tufted, erect, 

 wiry, 2-8 inches long, naked or very slightly winged above; fronds 

 2-8 inches long, 2-6 inches broad, deltoid or ovate, acuminate, 

 3-4 pinnatifid, the main rachis usually only slightly winged towards 



