156 



South India, Tinnevelly and Travancore 

 Hills ; Ceylon, Central Provinces, 2,000-5,000 

 feet ; Cachar and Chittagong Hills at no ele- 

 vation ; Malay Peninsula. Malay Islands ; 

 North Australia ; Polynesia. 



GENUS XXXIV. NEPHROLEPIS SCHOTT. 



(Deriv. Gr. Nephros, kidney ; lepis, scale in 

 allusion to the indusium being kidney-shaped 

 and scale-like.) 



Sori round, indusium kidney-shaped or 

 roundish ; veins forked, free, with club-shaped 

 apices. Fronds simply pinnate, pinnae articu- 

 lated and furnished with white dots above. 

 I. Rhizome erect, stoloniferous. 



(a) Sori about midway between edge and 

 midrib. Rhizome often bearing tubers. 



(i) Plant sturdy in habit. Texture 

 leathery. Indusium leathery. 



1. N. cordifolia. 



(ii) Plant delicate in habit. Texture 

 membranaceous. Indusium thin. 



2. N. undulata. 



(b) Sori nearer the margin. Rhizome 

 never bearing tubers. 



