BRITISH FERNS 
XXI 
LASTREA PSEUDO-MAS, var. POLYDACTYLA MAPPLEBECK (Woll.) 
Mr. J. Е. Mapplebeck. Westmoreland. 1862. 
2 üt, © Mil, 
Syn. MAPPLEBECKU (Moore) 
Another grand fern. It is remarkable that almost identically the 
same form— Z. ps.-mas polydactyla Wills”—should have been 
found a few years later, hundreds of miles away in S. Devon— 
perhaps Mr. Wills’ form may be a shade the more robust of the 
two,—but it is very much a case of Casar and Pompey. Mr. 
Crouch’s polydactyla found in Westmoreland is a fine form too, but 
more lax and scarcely as heavily tasselled. 

