140 POLYPODIUM INCANUM. 



A. Henderson under this name, is the Polypodium incanum of 

 Kunze. 



A stove evergreen Fern. 



Native of the West Indies and South America, Brazil, Ja- 

 maica, St. Catharine's Island, etc. 



Perhaps better known in this country under the name of 

 GoniopMehium incanum. 



The fronds, which are pinnatifid, are lanceolate in form. Seg- 

 ments oblong-obtuse and coriaceous. 



Fronds lateral, being articulated on a rhizoma which is creeping 

 and covered with scales. The veins are external and almost 

 invisible. 



The sori, which are uniserial, are submarginal and immersed. 



Length of frond varying from five to twelve inches; colour 

 above a dull green, below brownish, owing to the dense covering 

 of roundish, fimbriate peltate scales, which are pale in colour 

 in a young frond, becoming brown in the more mature state. 



My thanks are due to Messrs. Rollisson, of Tooting, and to 

 Messrs. A. Henderson, of Pine-apple Place, for plants of Poly- 

 podium incanum. 



It may be procured of Messrs. Kollisson, or A. Henderson. 



The illustration is from a plant in my own collection. 



