








224 

BRITISH FERNS 
Col. Jones raised a cross between this and cristata, but as the 
resulting tassels were hidden within the knots, and thus invisible, 
the cross Баз been lost sight of, and does not, we think, now exist. 
GRANDICEPS.—See note to percristata ; this: form is always 
barren, and can only be raised indirectly. 
PERCRISTATA. — À far finer crested form, found in the Lake 
District; bearing heavy tassels at all tips and with even the 
smaller divisions distinctly fanned. The spores of this when sown 
yield two very distinct forms; viz. the parental, true percristata 

! 
Fig. 263. P, ag. polydactyla. 


