202 THE BRITISH FERNS. 
21. Clowesii (M.). This is another tasselled form, referrible to 
the type form of the species, but quite distinct from Jervisii (20), in 
the more crispy tassels, and the more deeply pinnatifid attenuated 
pinne. The fronds are lanceolate, not suddenly acuminate. The 
pinne are elongated, and gradually narrowing for their whole length 
up to the base of the tassel; pinnate in the basal portion, and 
deeply pinnatifid throughout the remaining part, with blunt-ended 
lobes, the lobes being tolerably distinct and obtuse quite up to the 
tassel. The tassel itself forms tolerable sized multifid-crispy tufts ; 
and the apex of the frond is ramosely multifid-crisped. It differs 
from polydactyla (22) in having less elongated pinnules, and tapered 
pinne, the tassel being about equally developed. This variety was 
found at Windermere, by Mr. F. Clowes. 
22. polydactyla (M.). This is a tasselled form referrible to the 
incisa group. The pinne are not shortened as in cristata, nor are 
they tapered gradually towards the end as in Jervisü and Clowesii ; 
in fact they do not narrow much until quite close to the tassel 
which terminates each of them. The pinnules are incised, and the 
basal ones have a tendency to dilatation at their tips. The apex 
of the frond is more or less tufted. Here and there a frond has its 
apex more decidedly tasselled with a corymbose ramification, and 
the pinnae themselves are more normal, merely indicating a tendency 
to division; while occasionally a frond is produced in which the 
tendency to laceration both in the pinne and pinnules is carried to 
excess, becoming grotesque. It was found at Bromsgrove, in Wor- 
cestershire, and was communicated by B. Maund, Esq. [Plate 
XXXVII.—Folio ed. t. XVI B.] 
23. furcans (M.). The fronds of this variety are of normal cha- 
racter, except in this, that the ends of the pinn® are forked, usually 
once but sometimes twice, the divisions being short, tapering, and 
divergent, so as to produce a curious fish-tail-like appearance. It 
was found in the neighbourhood of Huddersfield, Yorkshire, by Mr. 
T. Stansfield, and a similar form has been gathered on Bookham 
Common, Surrey, by Mr. Stedman. 
24. Schofieldii (Sim). This is a curious pigmy plant, which has 
been a puzzle to many experienced pteridologists, by whom it has 
been successively referred to L. dilatata, spinulosa, and Filiz-mas. 

