BRITISH FERNS 

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Fig. 214. P. acul, acrocladon. 
to Dr. Wills; a most beautiful Fern, of robust but graceful habit, 
slender pinnules, and with the pinne 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.) 
Р. DRUERYI, 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, 

