294 



LASTREA UlLATATA. 



Fig. 236.— Middle pinna. 



Lepida, Moore. (Fig 23().) — Found on the confines of 

 Yorkshire and Lancashire. This form is rather larger than the 

 variety concinna, having the pinnae, as well as the pinnules, 

 more distant. The pinnules are also more ohtuse, and their 

 lobes more widely apart. This is a slender form, having 

 sharply toothed lobes. The fronds, including the stipes, exceed 

 eighteen inches in length. 



Fig. 237.— Middle pinna. 



Cristata, Moore. (Fig. 237.) — Found near Doncaster by 

 Mr. Appleby, and brought under general notice by Mr. R. 

 Sim, of Foot's Cray. A distinct crested variety, with somewhat 

 dwarf habit. The pinnae are usually twice forked into brief 

 bluntly spread segments, terminating in a slightly crisped tuft 

 as well as the apex of the frond. All the pinn® are not 

 regularly crested, but where not so they are dilate, showing a 

 tendency to fork. When the plant becomes older it will no 



