64 NIPHOBOLUS RUPESTRIS. 



The fronds rise out of a creeping rhizoma, which is covered 

 with reddish scales. 



Sori round, in about two irregular rows on each side of the 

 midrib, and is confined to the upper half of the frond. 



The veins and costa being buried within the frond, are 

 almost invisible. 



The star-like pubescence is not so plainly visible as in the 

 next species. 



I am indebted to the Curator of the Cambridge Botanic 

 Gardens, and to iVIr. Henderson, of Wentworth, for plants; and 

 to the latter gentleman; Mr. Sim, of Foot's Cray; and Mr. 

 Norman, of Hull, for fronds. 



The following Nurserymen include this species in their cata- 

 logues: — Booth, of Hamburgh; Rollisson, of Tooting; A. Hen- 

 derson, of Pine-apple Place; Masters, of Canterbury; Veitch, 

 Jun,, of Chelsea; Sim, of Foot's Cray; and Parker, of HoUoway. 



The frond for illustration was procured from Mr. Henderson, 

 of Wentworth. 



