44 ASPLENIUM RHIZOPHYLLUM. 



fresh plants at the apex of the fronds, and by this means soon 

 spreads itself over a large surface. 



It seems to be a species long known in England, having 

 probably been introduced as early as 1680. 



An evergreen greenhouse Fern. 



A native of North America — Canada and Carolina, growing 

 in damp shady situations. 



The fronds, which are simple, are glabrous, cordate-elongate, 

 the upper portion slender, filiform, acuminate, tapering to the 

 apex, and rooting at the extreme point. Fronds terminal, being 

 adherent to a somewhat tufted rhizoma. 



Length of frond from six to ten inches; colour brilliant 

 green. 



Sori linear, unilateral, mostly arranged in pairs on the 

 proximate sides of the primary venules; when mature, the 

 sori confluent. Indusium linear, the free margins of each pair 

 conniving. 



Veins forked. 



For plants of this species I am indebted to Mr. R. Parker, 

 of Hollo way; and to Mr. R. Sim, of Foot's Cray; and for 

 fronds to Mr. Norman, of Hull. 



It is in the Fern Catalogues of Messrs. Rollisson, of Tooting; 

 Sim, of Foot's Cray; A. Henderson, of Pine-apple Place; 

 Parker, of Hollo way; and Kennedy, of Covent Garden. 



The illustration is from a frond kindly forwarded by Mr. 

 G. Norman, of Hull. 



