98 OLFERSIA CERVINA. 



and inferior one truncate. Habit weeping. Fertile fronds bi- 

 pinnate, the pinnae being linear and entirely sporangiferous ; 

 stipes covered with scales. Habit erect. The fronds terminal, 

 and adherent to a creeping rhizoma, which is scaly. 



Length of frond from twenty-four to thirty-six inches; colour 

 bright green. 



Sori amorphous, densely covering the fertile fronds. 



Veins forked, internal, and combined by a transverse contin- 

 uous marginal vein. 



To Mr. Sim my thanks are due for a plant of this species, 

 and to Mr. G. Norman, of Hull, for fronds. 



It is in the Catalogues of Messrs. RoUisson, of Tooting; Sim, 

 of Foot's Cray; Yeitch, of Chelsea; Jackson, of Kingston; A. 

 Henderson, of St. John's Wood; and Stansfield, of Todmorden. 



The illustrations are from Mr. Norman's fronds. 



