70 PLATYLOMA TERN [FOLIA. 



Fronds glabrous, linear, pinnate, reclining, pinna? oposite or 

 alternate, about ten pairs, sessile, trilobed, the pinnse nearest 

 the apex is usually bilobed, cordate at the base, coriaceous, 

 having a cartilaginous margin; ultimate pinnse trilobed. 



Rachis and stipes purple, being covered with a plum-like 

 bloom; stipes pubescent, with long and thin whitish scales; 

 terminal, adherent to a short creeping rhizoma, which is scaly. 



Sori linear, continuous; indusium very narrow. 



Length of frond from twelve to eighteen inches, colour a 

 blue green. 



My thanks are due to Messrs. Rollisson, of Tooting, for 

 plants of Platyloma ternifolia, and to Mr. Norman, of Hull, 

 and Mr. Henderson, of Wentworth, for fronds. 



It is in the Fern Catalogues of Messrs. Rollisson, of Tooting; 

 Parker, of Hollo way; Sim, of Foot's Cray; and Booth, of 

 Hamburg. 



The illustration is from a plant in my own collection. 



