430 



CYSTOPTERIS P^RAGILIS. 



Cove, near Aberdeen, by Dr. Dickie; two miles east of Cove 

 by the late Mr. C. Barter; near Dunkeld by Professor Balfour; 

 and the Great Isle of Arran, in Gal way, by Mr. D. Moore, 

 of tlie Glasnevin Gardens. A very distinct form. Pinnae 

 deflcxed, ovate-lanceolate, slightly twisted, imbricated; pinnules 

 broad, oblong, with short obtuse blunt dentation, crowded, 

 imbricated, and decui-rent. Bipinnate, or more usually sub- 

 bipinnate. Sori nearly marginal and tuberculate. 





Fig. 84G.— Apex. Fig. 847.— Middle of frond. Fig. SIS.— Basal piiina3. 



Interrupta, Wollaston. (Figs. 846, 847, and 848.)— Found 

 in Westmorland by Mr. I. Hudhart, and made known by 

 Mr. F. Clowes, of Windermere. A distinct form. Fronds long 

 and very narrow, pinnse interrupted and contracted, with 

 irregvilar more or less fan-shaped pinnules, which are variously 

 truncated, laciniated, or depauperated. Fronds sometimes 

 almost linear, and occasionally bifid or multifid. A remarkable 

 monstrosity, the basal pinnse often normal, as in the illustration. 

 Length of frond fifteen inches, of which the basal six inches 



