Barren Frond. 



CERATODACTYLIS OSMUNDIOIDES. 



J. Smith. Fee. 



PLATE XXX. 



IJatK'ci cordifulia, 

 A Uosorus karioinskii. 

 Botryogramme " 



Lagasca. Hookee, {not Ltebmann.) 

 KuNZE. Bentham. Hookee. 

 Feb. 



Ceratodactylis — From Keras — a horn, and dactylos — a finger, alluding to 

 the divisions of the fronds. Osmundioides—Oam.\mdLa.-Vik.e. 



A VEKY handsome, delicate-fronded, Osmunda-lookmg Fern. 



An evergreen stove species. 



Native of Mexico. 



Fronds large and tripinnate, the fertile and sterile pinnules 

 different. Sterile pinnules ovate-cordate, thin but firm, having 

 a thickened narrow margin; the veins closely pinnated and 

 forked, the margin finely spinulose-serrate: fertile pinnules, which 

 are situated only on the upper portion, forming a panicle, are 

 narrow, elongated, nearly terete, the margins membranaceous, 

 involute, and forming the involucres. 



Caudex brief, stout, flexuous, and scaly, stipes long, flexuous, 

 slender, and scaly; rachis flexuous and slender. 



Sori linear-oblong, and occupying nearly the entire length of 

 the pinnated veins of the upper pinnules of the frond. 



