







150 THE BRITISH FERNS, 
in the middle, the base developed into a pair of oblong acute 
divergent lobes, upwards of an inch long and three-eighths wide, the 
margin unequally crenate-lobate, and the apex multifid. Like the 
other crenate-lobate forms, this variety is supra-soriferous. It was 
found in Guernsey, by Mr. James. The other form is dwarfer, 
broadest below, less deeply crenate on the margin, and only slightly 
multifid at the apex. This was found at Hazlewood in the county 
of Sligo, Ireland, by the Rev. W. R. Bailey. 
7. sagittifolium (Woll.). This variety is most remarkable for 
having the auricled portions at the base of the frond elongated, each 
with a distinct midrib, and directed downwards so as to resemble 
the barbs of an arrow. The fronds are of ordinary size, and in . 
other respects nearly of the normal character; the margin is some- 
times entire, somtimes crenate or with a few projecting lobes, 
sometimes slightly undulate, and in the case of the Sussex plant 
having a tendency to become dilated at the apices both of the frond 
and of the elongated auricles. A very fine form was found at 
Littlehampton, in Sussex, by Mr. Wollaston ; and others have been 
obtained from Whitby by Mr. Clapham, and from Roche Abbey, 
Yorkshire, by Mr. S. Appleby ; from Fremington, Devonshire, by 
Mr. C. Jackson; and from the counties of Clare and Kerry in 
Ireland, by Dr. Allchin. This is not the var. sagittatum of Willde- 
now, a dwarf South European plant, allied to S. Hemionitis. 
8 sagittato-crispum (M.). This is a very handsome large-growing 
variety, the fronds reaching to more than a foot in length, and nearly 
or quite three inches in breadth. They are fertile, the sori extending 
sometimes to the basal lobes, much undulated, the márgin being more 
or less distinctly erenate or crenately-lobed, and the base extended 
into a pair of elongated acute lobes, thus blending the characteristics 
of crispum (91) and sagittifolium (T). It has been gathered by Mr. 
Wollaston at Petersfield, in Hampshire, and also at Ottery St. 
Mary, Devonshire, and by Mr. C. Jackson at Barnstaple, Devonshire. 
In Mr. Wollaston's garden some very singular fronds, irregularly 
cleft and laciniate, totally unlike the usual erisped fronds, have been 
produced by the Ottery plant. Occasionally unilateral fronds, with 
the costa curved and cornute, and the lamina short and bireniform, 
accompanied by a separate reniform lobe, or by a pair of ovate-cordate 

