66 Ferns of British India and Ceylon. 



24. multilineatum. Lobes very shallow ; 5-6 pair of 



veins anastomose ; rounded prominent auricles. 



25. sakayanum. Sori basal on veins ; 3 pair of 



veins anastomose. 



26. pennigerum. No auricles below ; 5-8 pair of 



veins anastomose, except in fertile contracted. 



27. larutense. Indusium didymochlaenoid, stipe 



auricled, 5-6 pair of veins anastomose. 



28. crinipes. Very crinite stipes, 2 pair of veins 



anastomose ; sori medial. 



29. ferox. Very crinite stipes, 5 pair of veins 



anastomose ; sori basal. 

 b. Sori becoming meniscioid in age. 



30. glandulosum. Sterile pinnse broad ; 8-9 pair 



of veins anastomose. 



31. lineatum. Pinnae narrow, 4-5 veins anastomose, 

 ii. Involucres rarely visible, except in young state, often entirely 



absent ? 



32. costatum. 4-6 pair of veins anastomose. 



33. urophyllum. 8-12 pair of veins anastomose ; 



sori often becoming meniscioid. 



34. moulmeinense. 14-18 pair of veins anastomose. 



N.B. — Jerdon's elatum (?) is not included in this key, the stipe 

 and rhizome being unknown. 



1. Nephrodium subpecttnatum. {Wall.) This name must 

 replace that of Otaria ; Wallich having collected the species on the 

 Ava Mountains, vide his specimens so named, Wall. Cat. 311 in 

 the Linnaean Herbarium. 



Mr. Mann informs me that the Khasia specimens alluded to by 

 Clarke, Jour. Linn. Soc.xxiv.fi. 416, were cultivated from Nilgiri 

 spores. 



