6S POLYPODIUM INTEGRI FOLIUM. 



E-hizoma creeping. Fronds crowded. 



Length of frond eighteen inches; breadth in widest part two 

 inches and a half. 



Sori diminutive, numerous, thickly scattered over the upper 

 half of the frond. 



Veins internal and scarcely to be seen. 



My thanks are due to Messrs. Kollisson^ of Tooting, for plants 

 and fronds of this Fern. 



It is in Messrs. RoUisson's collection at Tooting. 



The illustration is from a plant in my own collection. 



There seems to be some obscurity regarding this class of Ferns. 

 Fee gives six species, namely, Irioides, Irregulare, Lougissimum, 

 Sessile, Trijidum, and Palmatum. The Irregulare of Link seems 

 to be a very different Fern to the P. irioides; and another 

 species known in gardens as the P. platyotis is also distinct, 

 as indeed the present Fern appears to be. There is a marked 

 difference in the habit and venation of these species, yet^ owing 

 to the latter being so imperfectly seen, the differences are not 

 well understood. 



