POLYPODIACE^E. 



93 



alternate. Pinnules adnate or sessile, deltoid-oblong, crenate, and 

 smooth on both sides. Sori punctiform and becoming confluent. In- 

 dusium membranaceous and dentate. 



6. Cheilanthes radiata, J. Sm, 



Cheilanihes radiata, J. Sm. in Hook. Jour, of Bot. 4, p. 159. 



Adiantum radiatum, Linn, ex Sw. Syn. Fit p. 121 ; Willd. Spec. PI 5 p 437 • 

 Kaulf. Enum. ML p. 303. ' 



Hab. Vicinity of Kio Janeiro, Brazil. 



38. PLATYLOMA, J. Sm, 



(Pteridis Spec. Auct. Allosori Spec. Presl.) 



1. Platyloma rotundifolia, J. Sm. 



P. rhizomate repente; frondibus pinnatis ; pinnis altemis ovatis ellipti- 

 cisve breviter petiolatis integris apice subito acuminatis. 



Platyloma rotundifolia, J. Sm. in Hook. Jour. Bot. 4, p. 160, sine char. 

 Pteris rotundifolia, Forst. Prodr. Fl. Ins. Austr. p. 79; Willd. Spec. PI. 5, p. 363; 

 A. Rich. Bot. Voy. Astrol. p. 78 j A. Cunn. in Hook, Comp. Bot. Mag. 2, p. 365. 



Hab. Port Jackson and Illawarra, New South Wales. Vicinity of 

 the Bay of Islands, New Zealand : frequent. 



Rootstoch creeping, above ground squamose. Stipes terete, squamose- 

 hispid. Fronds pinnate, erect : pinnce alternate, articulated on a short 

 petiole, ovate or elliptical-oblong, about 6 inches in length and from 3 

 to 4 lines broad, with a short and abruptly acuminated point; the 

 margin entire and slightly crenate. 



2. Platyloma Brownii, J. Sm. 



Platyloma Brownii, J. Sm. in Hook. Gen. Fil. t. 115, A. 

 Adiantum paradoxum, R. Br. Prodr. Fl. Nov. Holl. p. 155. 



24 



