POLYPODIACEiE. gg 



Mr. A. Cunningham in his "Specimen of the Botany of New Zea- 

 land," published in Hooker's Companion to the Botanical Magazine, 

 vol. 2, p. 366, has united to this the A. pubescens of Willdenow; but, 

 if we have correctly identified the A. liispiduUm of Swartz, the two 

 plants are obviously very distinct; particularly in the circumscription 

 and division of the fronds, the size and form of the pinnules, and the 

 colour of the hairs. 



* * * * Frondes ternatce vel pedatae. 



12. Adiantm ternatum, H. B. K 



A. stipite angulato; frondibus pinnath ternatisve etiam bipinnatis; 

 pinnis glabris rliomboideo-lanceolatis acuminatis nunc oblongis subdl 

 midiatis apice spinuloso-dentatis basi truncato-cuneatis ; rhachi rufo- 

 (omentosa; soris oblongis contiguis marginem superiorem totum atque 

 inferior em ad medium usque replentibus. 



Adiantum ternatum, H. B. K. ex Willd. Spec. PL 5 ; p. 436. 

 A. triangulatum, Kaulf. Enum. Fil. p. 204 '/ 

 A.fovearum, Raddi, Plant. Brasil. p. 58, t. 77? 



Hab. Brazil ; in the vicinity of Rio Janeiro, 



Stipe angular, 8 inches to a foot in length, black, glossy, and rufous- 

 tomentose. Fronds about equal in length with the stipe, varying 

 from simply pinnate to temate, and even sometimes bipinnate, with 

 approximating pinnae 1 to II inches in length, seated on a very short 

 petiole, glabrous on both sides, rhomboid-lanceolate and slightly acumi- 

 nate, subfalcate, or subdimidiate-oblong, the base truncate-cuneate ; supe- 

 rior margin and outer half of the inferior one cut into broad teeth, 

 the apex and margin of the sterile pinnse dentate with sharp teeth! 

 Khachis angular, densely rufous-tomentose. Sori 8 to 10 on the upper, 

 and 4 to 6 on the lower and outer margin, contiguous, and produced 

 frequently to the Yery point. 



Willdenow does not appear to have seen fertile specimens of this 

 species ; from this circumstance, as well as from convincing proof of 

 the variable character in the divisions of the fronds and form of the 



