rROIIP HI fERTILE FRONDS UNIFORMLY SOMEWHAT LEAF-LIKE, 

 Unuur Yg^ DIFFERING NOTICEABLY FROM STERILE FRONDS 



made up chiefly of the sterile fronds. These some- 

 what resemble the Brittle Bladder Fern in whose 

 company they are seen so often. 



Slender Cliff Brake 

 89 



