ASPLENIUM ADIANTUM-NIGRUM. 



179 



section. Rachis very long, being three fourths of that of the 

 frond. Frond broad, pinnae approximate, the apex abrupt, 

 forming a more or less square termination, instead of the 

 ultimate pinna. I am indebted to Mr. Edwards for fronds. 



mm 



S^^^i> 



Fig. 523.— Frond. 



Flabellatum, Lowe. (Fig. 523.) — A distinct form with 

 flabellate fronds. The apex of the frond branching. Pinnae 

 broad in the barren frond, and very narrow in the fertile ones. 

 I am obliged to Messrs. Stansfield for fronds. 



Leptorache, Moore. — A small-fronded interesting form, 

 remarkable for the length of its stipes, and the small size of 

 the parts of its frond. Length of stipes seven inches, slender, 

 the rachis also slender; the leafy portion three inches long, 

 ovate, tripinnate, briefly acuminate. Pinnae alternate, the basal 

 pinnules of the basal pinnsD broadly and bluntly ovate, and 

 divided into small, thin, obovate wedge-shaped pinnules, which 



