Portion of barren Frond— under side. 



GYMXOGRAMMA TRIFOLIATA. 



Desvaux. J. Smith. Sprengel. ^Ioore. 



PLATE XXXI. 



Arrostic/ium li-ifolla turn , 

 Ilemionitis trifoliata, 



LTNN;Etrs. 

 Humboldt. 



Gymnorjramma — Naked writing, in allusion to the sori. 

 Trifoliata — Three-leaved. 



A BEAUTIFUL goldeu-powdered Fern, rare in cultivation. 



Native of the West Indies and South America. 



Fronds pinnate, pinnee linear, from two to three inches in 

 length J sterile fronds everywhere very smooth; basal pinnae tri- 

 foliate, higher on the frond usually bifoliate, opposite or sub- 

 opposite; pinnae short-stalked. 



Stipes and rachis reddish. 



Veins forked. 



Sori along the veins, naked, and eventually confluent. 



L 



