105 
of many of the pinnm have enlarged leaflets which are 
semicircular, with a wedge-shaped base, and large teeth 
protruding. The pinnae are alternate. The whole plant is 
not more than six inches long, of which the stalk takes two. 
The width varies from three and a half inches to half an 
inch, without any uniformity in its variation, and averages 
an inch. The leaflets at the extremity of the frond or 
pinnae either resemble a child’s kite or are ovate or 
triangular, always having large teeth projecting, and making 
the Fern a most conspicuous object. As the plant is not 
mature, it is to be hoped that as it advances in life it will 
not alter its character. It must not be forgotten that 
instead of a leaflet at the end of the frond a little horn 
appears, not much thicker than a thread. M. Hawkchurch 
and Wootton Fitzpaine. 
50. Interrupted A. F. Interruptum. This, as its name 
implies, is interrupted here and there by having shorter 
pinnae or mis-shapen leaflets. The largest leaflets are 
regular and serrated with an auricle that is serrated like- 
wise. The others are much reduced in size, wedge-shaped 
at the base, triangular, egg-shaped, or roundish above. 
These are generally near the mid-stem. The pinnae vary in 
length, some three inches, others only half an inch. The 
frond is from twelve to eighteen inches, of a narrow, lance- 
shaped outline, tapering towards its tip. Moore describes 
the apex as caudate — tailed or tail-like. This in a measure 
makes amends for the deformities in the other parts of this 
variety. Its lengthened form and majority of pinnae 
shortened form the leading character of this variety. M. 
Axminster, Charmouth, Hawkchurch, and Wootton Fitz- 
paine. 
51. Jackson’s Interrupted A. F. Interruptum Jacksoni, 
This diflers from the preceding variety in having a lax, airy 
frond, torn or laciniated and in some cases linear leaflets. 
The leaflets on the higher part of the pinnae are generally 
more regular and oblong. The frond is about a foot long. 
M. 
52. Dissimilar A. F. Dissimile, This diflers from the 
ordinary interrupted form in not having so elongated a 
form or such a tail-like apex, while, on the other hand, its 
