2o Ferns of British India and Ceylon. 



GENUS VII.— STRUTHIOPTERIS. (Willd.) 



(Struthios ostrich, the fronds like feathers of the bird.) 



. Sori dorsal on the veins of the changed and contracted pinnae 

 of the fertile frond, and quite concealed by the revolute margins ; 

 indusium very thin hemispherical, very fugacious, or wanting ; caudex 

 erect or creeping ; fronds stipitate, dimorphous, fertile ones pinnate ; 

 pinnse torulose or flattish ; veins all free pinnate. ..(Differs from 

 Onoclea in having free veins.) 



i. Struthiopteris orientalis. (Hook.) Fronds ovate-oblong, 

 not attenuated at the base ; fertile ones oblong, contracted ; pinnss 

 linear-oblong, flattened, two-edged, the broad refracted margins 

 covering the whole back, dark brown, glossy, at length spreading, 

 and torn at the margin. Hook. Syn. Fil. p. 46. Bedd. F. B. I. 

 t. 171. 



Sikkim, elevation 900-1,200 feet, Khasya, Assam. 



(Also in Japan and Western China.) 



GENUS VIII. — WOODSIA. (Br.) 



(In honour of Joseph Wood, a British botanist.) 



Sori globose; indusium inferior, soft, membranaceous, calyciform, 

 or more or less globose, and sometimes enclosing the sorus, at length 

 opening at the top, the margin laciniate or fringed ; veins free, simple, 

 or forked. Small herbaceous ferns, the stipes tufted, often jointed. 



1. Woodsia hyperborea. (Br.) Glabrous, or with the stipes, 

 rachis and costa beneath slightly hairy and scaly; fronds 5 inches 

 long by \ inch broad, linear-lanceolate, pinnate ; pinnse cordate- 

 ovate, pinnatifid, with few broadly obovate entire lobes, the lower 

 ones distinct ; indusium smaller than the sorus, but fringed with long 

 hairs which extend beyond it. Hook. Syn. Fil. p. 46. Clarke, 



A 434- 



Kashmir, Sind Valley, elevation 8,000 feet ; collected only oy 

 Mr. Levinge. 



(Also in Alpine and Arctic Europe and North Asia.) 



