136 POLYPODIUM TETRAGONUM. 



base^ from one to two feet high; pinnato-pinnatifid, the lower 

 pinnse deflexed, the fronds abrupt at the top, with a pinnatifid- 

 lanceoLite tail-like terminal pinna. Pinnae lanceolate, the lower 

 ones tapering towards the base, sessile, acuminate-pinnatifid, the 

 segments blunt, oblong, and somewhat falcated. Fertile fronds 

 nearly ovate, with narrower more distant pinnte, the lower of 

 which are narrowed towards the base; fertile throughout. The 

 upper pinnse are broad and abrupt, and not narrowed at the 

 base. 



Sori abundant, round, becoming effuse and confluent in lines, 

 forming a double series up the centre of the lobes, from the 

 main costa to the apex of the lobe, the lines somewhat wider 

 apart at the base. 



A handsome Fern, with bright green shining fronds, having 

 a distinct aspect from the presence of the broader barren, and 

 narrower fertile fronds, and also remarkable for the tapering 

 towards the base of the lower pinnse. 



My thanks are due to Mr. Henderson, of Wentworth, for a 

 plant and fronds of this species. 



It may be procured of Mr. A. Henderson, of the Pine-apple 

 Place Nursery, London. I am not aware of any other cata- 

 logue which contains it. 



The illustration is from a frond sent by Mr. Plenderson, of 

 Wentworth. 



