48 POLYPODIUM VACILLANS. 



five inches, width three-quarters of an inch, the lower ones 

 standing forwards. The edges slightly recurved. 



Stipes hairy at the base, circular, and for about three inches 

 below the lowest pinnse a narrow decurrent portion runs on 

 each side the pinnse down the stipes. 



Length of frond twenty-eight inches, of which twelve inches 

 is naked; colour dull green. 



Khizoma creeping, branched, and partially covered with brown 

 net-work scales, giving it a spotted appearance. 



Veins pale green, semi-transparent, forked, having club-headed 

 apices, on which the sori is formed. 



Sori uniserial; colour reddish brown. 



For a plant of this species I am indebted to M. Schott, of 

 the Imperial Gardens of Vienna. 



It is not in any of the Nurserymen's Catalogues. 



The illustration is from a plant in my own collection. 



