156 PLATYCERIUM STEMMARIA. 



x\n evergreen stove species. 



Native of Western Africa. 



Introduced into the Royal Gardens, Kew, in 1848. 



Sterile and fertile fronds different. Sterile frond sessile, 

 elongated, and ascending; upper portion scarcely lobed, reni- 

 form, permanent, elevated, spongy, and depressed. Fertile frond 

 simple, horizontal, thick and coriaceous, divided, and widening 

 upwards. Articulated with the rhizoma. 



Yeins repeatedly forked, and distantly anastomosing; venules 

 internal and compoundly reticulated. 



Sori occupying the lobes. 



For plants and fronds my thanks are due to Mr. Joseph 

 Henderson, of Wentworth, and to Messrs. Rollisson, of Tooting. 



It may be procured of Messrs. Sim, of Foot's Cray; Rol- 

 lisson, of Tooting; Yeitch, of Chelsea; E. G. Henderson, of 

 St. John's Wood; A. Henderson, of Pine-apple Place; Jackson, 

 of Kingston; and Kennedy, of Co vent Garden. 



The illustration is from a frond forwarded by Mr. Henderson, 

 of Wentworth. 



