284 



F I L I C E S. 



84. A L S P H I L A, R. Br., Presl. 

 (CTATHEiE Spec. Auct. Chnoophora, Kaulf.) 



1. Alsophila australis, B. Br. 



Alsophila australis, R. Br. Prodr. Fl. Nov. Holl. p. 158; Hook. Spec. Fil. 1, p. 50, 

 t. 19, A. 



Hab. Illawarra, New South Wales. 



Trunk from 10 to 15 feet high. Stipes sharply muricated, almost 

 aculeate ; and on the costa beneath are a few very conspicuous bul- 

 late scales. 



2. Alsophila ferox, Presl. 



Alsophila ferox, Presl, Tent. Pterid. p. 62; Hook. Spec. Fil. 1, p. 41. 

 Poli/podium aculeatum, Raddi, Plant. Brasil. 1, p. 27, t. 42. 



Hab. On the Corcovado, near Rio Janeiro, and the Organ Moun- 

 tains, Brazil. 



Trunk from 8 to 12 feet high, having the remains of the old stipes 

 attached. Stipes thick and glossy, armed with long and sharp 

 prickles. Fronds very large, bipinnate, and rather flaccid, the lower 

 pinnse small and distant. Segments linear-oblong, falcate, and ser- 

 rate. Rhachis, costa, and veins clothed with a yellowish-brown 

 pubescence on both sides. Sori copious, in a single row about half- 

 way between the costa and margin, terminating about the breadth of 

 2 lines from the point of the segments. Sporangia confluent and 

 concealing the costa, seated on a hairy receptacle. 



We have relied almost entirely upon the authority of Sir William 

 Hooker for this being the A. ferox of Presl : it is evidently the 

 Polypodium aculeatum of Raddi. 



