86 



BRITISH FERNS 



Apu^eforme (Fig. 50) . — Found in Yorkshire by Mr. J. Horsfall ; 

 fronds prettily crested, and with fish-like outline. 





Fig. 50. A.f.f. apuitforme (pinna). 



Fig. 51. A.f.f. Barnesii. 



Barnesii (Fig. 51). — Found by Mr. Barnes, fronds eight inches 

 by one ; short, wide, and much-incised pinnae. 



Blak^e. — A very beautifully crested plumose form, raised by Mr. 

 Parsons, the nearest approach to the superbum section, but surface 

 lucent. 



Canaliculatum. — Raised by Stansfield ; heavy grandiceps type. 



Caput Medusae. — Raised by Mapplebeck ; dense, rounded head 

 with twisted, snake-like segments. 



Cathedrale. — A dwarf-crested form, found over two hundred 

 years ago on Lichfield Cathedral. 



Clarissima Jones. — A very remarkable Fern, found in N. Devon ; 

 robust, and with slender pinnules, fronds over two feet wide. 

 Apospory on frond backs first discovered on this. See Life History, 

 chapter v, page 17. (See Appendix No. V) 



