BRITISH FERNS 



Fig. 214. P. acul. acrocladon. 



to Dr. Wills ; a most beautiful Fern, of robust but graceful habit, 

 slender pinnules, and with the pinna? near the frond tip, turning 

 inwards and overlapping to form a unique, long, slender termina- 

 tion ; reputedly barren until a few years ago when it yielded, in the 

 hands of Mr. C. B. Green, of Acton, and the writer, a unique new 

 section, for which we refer to our chapter on Selective Culture. 

 Some of these we cite here. (Appendix No. LIII for type.) 



P. Drueryii, P. gracillimum Druery. — In these the half-inch 

 pinnule of the parent is greatly lengthened, sometimes to nearly 

 three inches, the whole Fern consisting of almost hair-like segments, 



