130 ACROSTICHUM LONG I FOLIUM. 



ceolate-acumiiiate in form, slightly undulated, having the base 

 attenuated, and bright green in colour. Fertile fronds erect, 

 also lanceolate-acuminate, attenuated at the base, smaller than 

 the barren frond, and somewhat narrower. 



Both fronds articulated immediately above the base of the 

 stipes. Fronds lateral. 



Khizoma creeping and scaly. 



Sori amorphous, densely covering the whole under surface, 

 except the midrib, the contrast between the black sori and 

 the green midrib being very conspicuous. 



Veins forked and free, internal and indistinct. 



Length of frond from twelve to eighteen inches. 



Rachis and stipes, as well as the frond itself, scattered over 

 with large brown scales. 



For a plant my thanks are due to Mr. P. Clarke, Director 

 of the Royal Botanic Gardens, Glasgow. 



It may be procured of Messrs. Sim, of Foot's Cray; Rol- 

 lisson, of Tooting; and Jackson, of Kingston. 



The illustration is from a plant in my own collection. 



