86 CYSTOPTERIS TENUIS. 



Fronds lateral or terminal, and adherent to a creeping 

 rhizoma. 



Sori circular, medial, and minute. 



Veins forked, simple, and free. 



Fronds slender and glabrous. 



Length twelve inches; colour a bluish green. 



For plants ray thanks are due to Mr. Joseph Henderson, 

 of Wentworth, and to Mr. R. Sim, of Foot's Cray. 



It may be procured from Messrs. Sim, of Foot's Cray; A. 

 Henderson, of Pine-apple Place; E. G. Henderson, of St. John's 

 Wood; Kennedy, of Covent Garden; and Cooling, of Derby. 



The illustration is from a plant in my own collection. 



