248 BRITISH FERNS 



Pectinatum Jones. — Marginate, with comb-like edges. 



Peraferens. — Found in several places with slight variations ; 

 truncate fronds terminating in a pocket and thorn. 



Perafero-sagittatum Druery. — Frond and basal lobes termi- 

 nate abruptly with pockets and projecting midrib. 



Radiosorum. — Fronds normal, but with rounded ends, where the 

 sori are arranged like the figures of a clock ; a form of truncatum. 



Ramo-cristatum. — Fronds branch repeatedly, bearing crests 

 at terminals on lines of ramo-marginatum, but leafier and non- 

 marginate. 



R.-c. Moly.— A splendid form (see Appendix No. LXXXVI). 



Ramo-cristulatum Stansfield. — A branched form of cris- 

 tulatum. 



Fig. 300. 5. v. ramo-marginatum. 



Ramo-marginatum (Plate XXXVII, Fig. 300).— A magnificent 

 branch-crested form, narrow and marginate, and repeatedly 

 branching until a wide and beautiful crest is developed, 



