46 ADIANTUM PULVERULENTTJM. 



Introduced into England in the year 1793. 



The fronds, which are bipinnate and broadly ovate in form, 

 have somewhat lanceolate pinnce, the pinnules being numerous, 

 close together, and are gradually smaller in size as they 

 approach the apex of the frond. Slightly petiolate, more 

 membranaceous than coriaceous, oblong-dimidiate, the upper 

 base being parallel and close to the rachis; the upper pinnules 

 very small, and almost obovate. 



Rachis and stipes covered with ferruginous hairs, so as to 

 be quite rough. 



Length of frond from twelve inches to two feet; colour 

 full green, and having a glossy appearance. 



Sori linear and continuous, solitary, generally only occupying 

 a portion of the superior margin. 



Sir W. J. Hooker remarks that it is a more tender and 

 membranaceous plant than Adlantum villosum, with smaller, 

 more copious, and much denser pinnules, gradually tapering 

 to a narrow point. 



My thanks are due to Dr. J. D. Hooker, of the Royal 

 Gardens, Kew, and to M. Schott, of the Imperial Gardens of 

 Schccnbrunn, near Vienna, for plants and fronds of this species. 



I am not aware that it is in any of the Nurserymen's 

 Catalogues. 



The illustration is from a plant in my own collection. 



