Pinnule of fertile Frond— under side. 



CYATHEA EXCELSA. 



Swartz. Hooker. J. Smith. 



PLATE LVI. VOL. VIII. 



Cyatkea arborea, 



Boey, (Not of Smith, Swartz, nor Hooker.) 



Cyathea — A little cup, (the form of the indusium.) 



Excelsa — Tall. 



Another rare species, not in ordinary collections. 



An evergreen stove Fern. 



Native of Mauritius and Bourbon. 



The fronds, which are bipinnate, are glabrous, and somewhat 

 membranaceous; pinnules lanceolate, and much drawn out to a 

 point; pinnatifld, with segments oblong and serrated. 



Veins simply forked below the middle. 



Stipes and rachis pale. 



Sori situated near the costa. Indusium membranaceous, shining, 

 and very fragile. 



I am under an obligation to Mr. Joseph Henderson, of Went- 

 worth, for pinnae of this species. 



It does not appear to be included in any of the Nurserymen's 

 Catalogues. 



The illustration is from a pinna sent by Mr. Joseph Hen- 

 derson. 



