236 



BRITISH FERNS 



Fig. 280. 6'. v. crispum fimb. cristatum. 



C. f. cristatum (Fig. 280), of Stansfield and Cropper, and 



C. Drummond^e, found by Miss Drummond at Falmouth, are 

 both fringed and tasselled, the latter ranking as one of the most 

 remarkable, having two sorts of fronds, one very long, narrow, and 

 frilled, with plain edges and very broad, branched crests, and the 

 other on like lines, but beautifully fringed, the tips of the fringes, 

 if layered, yielding plants by apospory (see page 17) . 



C. D. superbum. — Has no plain-edged fronds, all are fringed. 



C. D. grandiceps. — Raised by Mr. H. Bolton, of Carnforth ; has 

 extra heavy tassels. 



C. fertile. — Varieties of the frilled type have been found which 

 are partly fertile ; as seedlings they are fully equal to the barren 

 forms, but when they begin to bear spores, the frill is defective, the 

 frond apparently being incapable of bearing spores and completing 

 the frill. By virtue of this fertility, crosses have been effected 

 with good results. 



