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ASPIDIUM DILATATUM, Vae. Lepidotum. 



PLATE LIII. 



Lastrea dilatata, var. lepidota, Mookb. 



Aspidium — Shield Fern. Dilatatwm — Spread out, Lepidotum — Scaly. 



In the Section Lastrea of Authors. 



A VERY remarkable variety of the Broad Prickly-toothed 

 Buckler Fern. 



It was found in Yorkshire six or seven years ago, and 

 procured from Mr. Stark, of Edinburgh. 



The fronds are very broadly ovate in form, quadripinnate, 

 the ultimate pinnules being pinnatifid, toothed, and small in 

 size. 



Stipes and rachis densely scaly. 



So different is this Fern, that Mr. Moore gave it the MS. 

 name of Lastrea lepidota, believing it to be a distinct species. 



Length of frond eighteen inches. 



It is a more divided Fern than any other British Aspidium. 



My thanks are due to Mr. Edwin Cooling, of Derby, for the 

 frond from which the illustration is taken. 



