04. FILICES. 



Stipes thick and of a pale straw colour, about 8 inches long, with a 

 few brown furfuraceous scales, which extend to the rhachis. Sterile 

 fronds bipinnate, large, 2 to 3 feet long. Pinnules numerous, approxi- 

 mate, glabrous, subalternate, sessile, about one inch long and 3 to 4 

 lines broad, oblong-lanceolate, the margin irregularly crenate. Rhachis 

 of the pinnge with two broad marginal lines in front (a character not 

 well represented in the figure), beset with slender fugacious paleae. 

 Fertile fronds wanting. 



In the absence of the fertile fronds we infer from the habit of the 

 sterile ones, with their articulated pinnse and uniform reticulated 

 venation, that our plant belongs to the present genus. 



Plate 12. — Fig. 1. A pinna, showing its articulation with the 

 rhachis, of the natural size. 1 a. Under side of a pinnule. 1 b. Scales 

 from the rhachis beneath. — Magnified. 



32. PLATYCERIUM, Desv. 



(Acrostichi Spec. Sw. & Auct.) 



1. Platycerium alcicorne, Desv. 



Platycerium alcicorne, Desv. ex Presl, Tent. Pterid. p. 240, t. 10, f. 12. 

 Acrostkhum alcicorne, Sw. Syn. Fil. p. 12 & 196 ; Willd. Spec. PL 5, p. Ill ; R. Br. 

 Prodr. Fl. Nov. Holl. p. 145. 



Hab. Illawarra and Hunter's River, New South Wales. 



2. Platycerium biforme, Blume. 



Platycerium biforme, Blume. ex Presl, Tent. Pterid. p. 240 ; Hook. Gen. Fil. t. 80, B. 

 Acrostichum biforme, Sw. Syn. Fil. p. 12 j Willd. Spec. PL 5, p. Ill ; Blume, 

 Enum. PL Jav. p. 103. 



Hab. Island of Singapore : on trees. 



