60 FERNS OF THE LAKE COUNTRY 



along each pinnule or lobe. Indusia small and kidney- 

 shaped, with uneven margins fringed by small round 

 stalkless glands. The whole frond is covered with 

 similar glands. By these stalkless, or sessile, glands, 

 as well as by the fewer and narrower scales of the 

 stipes, L. aemula is distinguished from L. dilatata 

 whose glands are stalked. In ordinary cases, the tri- 

 angular outline and hollow crisped surface of the 

 fronds are sufficient to distinguish the Concave Buck- 

 ler Fern, which is also more decidedly evergreen, and 

 has this further peculiarity, that the fronds decay from 

 above downwards not like the Broad Prickly-toothed 

 Fern, upwards from the base. Its range of elevation 

 does not appear to exceed 600 feet. It prefers shady 

 and rocky localities, and is easily cultivated. 



HABITATS. St. Bees' Head (J. Huddart), Brough- 

 ton (J. M. Barnes), Coniston (Miss Beever), Winder- 

 mere (F. Clowes), 



