

110 THE BRITISH FERNS. 
measure three-fourths of an inch in length, and about the same 
across the base, the basal lobes right and left being cut down nearly 
to the costa, and themselves lobate with serrated segments, and the 
upper lobes being cut in proportion. Itis an exceedingly rare plant, 
difficult to cultivate, and uniformly barren. [Plate LXXVI 
bis, À. ] 
2. lobatum (M.). This is a large form, resembling crenato-lobatum, 
but remarkable for having the pinne, especially those about the 
middle of the frond, furnished at the base with about two deeply 
divided broad obovate lobes, the lowest of which are in some 
instances separated from the rest of the pinn® almost to the midrib. 
It was found in Devonshire by the Rev. J. M. Chanter; and in a 
smaller form at Ottery St. Mary by Mr. Wollaston. This appears 
to be the same as the var. sectum of Milde, found in Silesia. 
3. erenato-lobatum (M.). This resembles a vigorous normal form, 
except that the pinnee, which are large, oblong, obtuse, are deeply 
but finely crenate-lobate, so as to acquire a toothed margin which 
is tolerably uniform throughout. It was sent from Nettlecombe, 
Somersetshire, by Mr. C. Elworthy; and a similar plant has been 
sent from Mill Slade, near Linton, Devonshire, by Mr. C. Jackson. 
4. subequale (M.). This form is a very elegant one, approaching 
the more perfect condition in which the var. depauperatum is occa- 
sionally found. "The fronds are sometimes narrowish and elongated, 
with the pinne distinct ; sometimes broad and shorter with the pinn® 
large and crowded : but the most remarkable peculiarity is, that the 
pinne, instead of being obliquely cuneate at the base, as in the usual 
forms, (in which the costa apparently proceeds from the lower basal 
angle, and the attachment is consequently nearly in a line with the 
lower margin) are nearly or quite equal-sided at the base, the costa 
and consequently the attachment being nearly or quite central. 
The upper pinne are oblong, the lower ones often obtusely deltoid, - 
the margins being either repand, that is, slightly sinuated so as to 
form a gently waving line, or more or less deeply crenate-dentate, 
often very elegantly crenated. It was first sent to us from the banks 
of the Wye, near Monmouth, by Mr. J. D. Enys. "We have also 
received it from— Yorkshire : Knaresborough, A. Clapham. West- 
moreland: Whitbarrow, F. Olowes. Somersetshire: Nettlecombe, 

