Portion of barren Frond. 



TRICHOMANES ELEGAFS. 

 RuDGE. Hooker. 



PLATE LXIV. — B. 



Hymenostachys diversifrons, BoET. 



Triohomanes — From tte Greet, soft hair. Elegans — Elegant. 



A MOST distinct Fern, from Guiana, Gorgona, Panama, and 

 Pacific side of Central America. 



This most elegant and singular species forms tufts of very 

 deep green, drooping, shining, sterile fronds; which are 

 pinnatifid, about four inches in length, with a stipes of two 

 or three inches, being much shorter than the fertile fronds. 

 The form is broadly lanceolate, segments almost horizontal, 

 crowded, lanceolate, subfalcate, the edge serrated. Frequently 

 caudate and proliferous at the apex. Width of frond an inch and 

 a quarter to an inch and a half. Tufted. Veins reticulated. 



The fertile fronds, which are from six to twelve inches in 

 length, are very different to the sterile ones, being extremely 

 narrow and undivided; situated on erect stalks. Width not half 

 an inch, having forked transverse veins and closely-united invol- 

 ucres, forming the edge on each side, which is fringed with 

 the coarse hair -like, abundant, slender, lengthy, filiform recep- 

 tacles. Length of stipes about half that of the frond. 



Colour deep green, and glistening. 



Requires a very humid close atmosphere, with a range of 

 temperature from 65° to 80°. 



My thanks are due to Messrs. Backhouse for fronds. 



