113 



CYSTOPTERIS FRAGILIS, Var. Furcans. 



MOOEE. 



PLATE XL VII. — A. 

 Cystopteris — Bladder-Fern. Fragilis — Frail. Furcans — Forked. 



This charming, distinct, and constant Fern was found on 

 Ben Lawers, in 1858, by Mr. James Horsfall, of Todmorden. 

 It is distinguished from the normal form by the furcations of 

 the fronds and pinnse. 



The fronds are once or twice forked at their apices. 



The pinnae, which are pinnatifld, are forked at their apices, 

 the pinnules are obtusely-ovate, toothed, and sometimes furcate. 



The venation and sori as in Cystopteris fragilis. 



Fronds from four to nine inches in length, and from one to 

 two inches broad. 



For the illustration my obligations arc due to Mr. Stansfield, 

 of Todmorden. 



