170 Ferns of British India and Ceylon. 



involucre small, subquadrate, hardly ever horseshoe-shaped, not 

 very fugacious. Clarke, F. N. I. t. S9-fig- l - 



Kashmir, 10,000-12,000 feet, north of the main valley ; appears 

 to be only a stunted form of dentigera. 



Var. 4. retusa. {Clarke.) 1-2-pinnate, rachis firm, round 

 when dry ; fronds red, never very large ; involucre small, fugacious ; 

 sori, scattered, round. Cystopteris retusa, Decne injacq. Voy. 176, 

 t. 177. Clarke, F. N. I. t. 59-2. 



Himalayas 10,000-15,000 feet, from Kashmir to Bhotan. 



Var. 5. flabellulata. {Clarke.) 2-pinnate; rachis firm, round 

 when dry, fronds red, 1-3 feet ; secondary pinnae deeply pinnatifid ; 

 segments laciniate; involucre small, fugacious; sori scattered, round. 

 Clarke, F. N. I. t. 60. 



Sikkim, 13,000 feet; Yakla, Jongri, scarcely distinct from 

 dentigera. 



Var. 6. polyspora. {Clarke?) 2-pinnate, or sub-3-pinnate; 

 rachis firm, round when dry; fronds red, 1-3 feet; involucre large, 

 approximate, very persistent, often reniform ; sori large, often ulti- 

 mately thickly covering the whole of the pinnules. Clarke, F. N. I. 

 t. 61. fig. 1. 



N. W. Himalayas, 6,000-10,000 feet ; Kumaon to Chumba. 



Very distinct from the other varieties, and approaching 

 oxyphyllum. 



Var. 7. parasnathensis. {Clarke?) i-pinnate, sub-2-pinnate; 

 rachis triangular when dry ; fronds reddish, if foot, narrow-oblong, 

 scarcely attenuated at the base ; primary pinnae if inch, broadest at 

 the base ; secondary pinnae \~\ inch, acutely toothed, scarcely 

 pinnatifid ; involucre short, oblong, in two oblique rows, very 

 persistent. Clarke, F. N. I. t. 61. fig. 2. 



Parasnath 4,000 feet elevation ; probably only a small stunted 

 form of retusa. 



it. Athyrium oxyphyllum. {Hook.) Stipes with many 



