140 ACROSTICHUM CRASSINERVE. 



and undulated. The fertile fronds also oblong-ovate in form, 

 simple, base attenuated, and shorter and narrower than the 

 sterile fronds. 



Both fertile and sterile fronds are articulated near the base 

 of the stipes, and are lateral. 



Ehizoma short, scaly, and creeping. 



Length of fertile frond from ten to twelve inches, of sterile 

 frond from fourteen to eighteen inches; colour deep shining 

 green. Coriaceous. 



Stipes and rachis smooth and stout. 



Sori amorphous, covering the whole under side of the frond. 



Veins internal and forked; the apices free and clavate. 



Margin of the frond thickened. 



For fronds my thanks are due to Mr. T. Moore, of the 

 Botanic Gardens, Chelsea; to Mr. J. Smith, of the Eoyal 

 Gardens, Kew; and to Mr. Clarke, of the Royal Botanic 

 Gardens, Glasgow. 



It may be procured of Messrs. Veitch, of Chelsea; Sim, of 

 Foot's Cray; and Kennedy, of Covent Garden. 



The illustration is from Mr. Smith's frond. 





