150 VITTARIA LINE ATA. 



thousand feet. Schiede found it at Jalapa, Hacienda de la 

 Laguna, and Huitamalco. 



In Mexico it grows on old trunks of forest trees, from the 

 hottest east coast to above nine thousand feet altitude. 



Fronds simple, linear-lanceolate, glabrous, pendulous, and 

 coriaceous; the barren frond much shorter and much thinner. 



Veins internal, very few, simple, parallel, and their apices 

 combined, forming a transverse sporangiferous receptacle. 



Fronds lateral, forming a dense tussacky mass, on a short, 

 creeping, scaly rhizoma. 



Sori intramarginal, in a groove which runs nearly the whole 

 length of the frond. 



Length from twelve to twenty-four inches; breadth an eighth 

 of an inch. 



For fronds of Vittaria liiieata my obligations are due to 

 Mr. J. Smith, Curator of the Royal Gardens, Kew. 



This species may be procured of Messrs. Booth, of Hamburg, 

 and A. Henderson, of Pine-apple Place. 



The illustration is from a frond sent by Mr. Smith, of Kew. 



