28 ASPLE?;iUM ALATCM. 



racliis brown beneath, green above, and winged with a broad 

 green margin. 



]jength of frond from twelve to eio'hteen inches: colour bright 

 green. 



Veins forked. 



Sori linear, oblique, and situated nearer the costa than the 

 margin. Indusium narrow and membranaceous. 



j\Iy thanks are due to Mr. H. Sim, of Foot's Cray, for fronds 

 of this sjDecies, from which the present illustration is taken. 



