60 POLYPODIUM INyEQUALE. 



lanceolate, and slightly glaucous; lower pinnce petiolate; upper 

 pinnce sessile and adnatc; all unequal at the base, hence its 

 name. 



Fronds drooping, oblong-ovate in form. 



The lower pinna? of Mr. Henderson's fronds ten inches long 

 by one inch and a half broad, lanceolate in form, attenuated 

 at the apex, and also narrowed at the base, where they are 

 unequally developed, the limina on the anterior side being 

 continued down the petiole beyond that on the posterior side. 

 Pinnae in centre of frond sessile. 



Upper pinnsB six inches long and one inch and a quarter 

 broad, adnate-decurrent. Terminal pinna? mostly somewhat 

 lobed, and being unequal at the base. Margin of the pinnae 

 crenulate. 



Length of frond thirty-six to fifty-four inches; colour pale 

 green. 



Stipes smooth, and pale green in colour. 



Rhizoma stout, covered with scales, and growing in a branching 

 tufted manner. 



Fronds annual, and articulated on the rhizoma. 



Sori uniscrial, large, circular in form, and situated near the 

 costa or midrib. Sometimes formed on the apex of a veinlet 

 within a costal areole, and at other times exterior to this areole, 

 and also at the junction of two or more veins. 



My obligations are due to Mr. Henderson, of "Wentworth; 

 and Mr. Thomas Moore, Curator of the Chelsea Botanic Gar- 

 dens, for fronds of the Poh/podium incrqaale. 



It docs not appear included in any other of the Nursery- 

 men's Catalogues, excepting Mr. E,. Sim, of Foot's Cray. 



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

 Wentworth. 



