LASTREA DILATATA. 



313 



Fig. 259 —Pinna, 



Angustipinnula, Moore. (Fig. 259.) — Found in Lancashire 

 by Mr. E,. Morris. A singular form, depauperated to a certain 

 extent. Length, twelve inches, oblong-lanceolate, bipinnate, 

 pinnae distant below. Pinnules rather distant, usually linear, 

 the basal anterior one often elongated. The linear pinnules are 

 nearly an inch long, their margins being unequally inciso-serrate. 

 Near the apex of the frond the pinnules are shortened into 

 irregular roundish lobes. 



Fig. 260.— Middle pinna. 



Am^na. Loice. (Fig. 260.) — A very handsome variety, found 

 in Scotland by ISIr. Todd. Length of frond twenty-one inches, 

 of which only five inches is the length of the stipes; width of 

 frond seven inches. A slender graceful Fern, somewhat lax. 

 Pinnae varying in size, some long and tapering to a point, others 

 ending in a rounded, much cut, terminal pinnule, and others 

 branching; the latter only half the ordinary length. Pinntdes 

 very various in size and form, some pinnate, others pinnatifid, 

 more or less depauperated, and occasionally wanting. Lobes 



