Portion of mature Frond, under side. 



POLTPODIUM FLEXILE. 



Moore. Henfret. 



PLATE XLVI.- 



Polypodium alpestre, var. flexile, 

 Pseudathyrium flexile, 

 Phegopteris flexilis. 



LiNDLET AND MoOEB. 



Newman. 

 J. Smith. 



Polypodium — Polypody. 



Flexile — Bending. 



A VERY pretty and distinct hardy British Fern, more slen- 

 der and flaccid than Polypodium alpestre, narrower fronded, 

 the pinnae being shorter, and the pinnules much less numerous. 



Pinnae brief, spreading, deflexed, having six to eight pairs 

 of pinnules. Pinnules oblong and narrowing below; distantly 

 toothed. 



Stipes very brief. 



Sori chiefly at the base of the frond, six or eight on a 

 pinnule. Apex barren. 



Length of frond from six to sixteen inches. 



Found in Glen Prosen, Clova Mountains, by Mr. Backhouse. 



For fronds my thanks are due to Mr. Stansfield, of the Vale 

 Gardens, Todmorden. 



