THE COMMON HART'S-TONGUE FERN. 185 
fronds. In other respects the variety is normal; itis subpermanent, 
and has been found by Mr. Wollaston at Littlehampton in Sussex ; 
by Mr. Dodds at Ilfracombe, Devonshire; and by Mr. James in 
Guernsey. [Plate LXXXV A] 
119. polymorphum (Woll.) The fronds of this form are very 
polymorphous, and are generally remarkable for their great breadth. 
Some'are normal; some like crenato-lobatum (43), but throwing out 
a lateral branch almost as large as the main portion ; some merely 
forked near the top ; some abruptly rounded and undulated, as in 
abruptum (111), but with an obtuse bulging like an arrested branch 
at the side or near the base; some with a separated but overlapping 
reniform lobe at the base: these all from six inches to a foot in 
length. Some are abbreviated, two or three inches long, the apex 
split, with subreniform overlapping lobes, or abruptly rounded with 
an obtuse cone-shaped elongation in the centre; some branched at 
the base into short forking branches, so that they are either nor- 
mal, multifid, ramose or truncate, or present two or more of these 
characters combined. The plants are fertile and constant to these 
peculiarities. It was found in Sussex by Mr. Wollaston in. 1854. 
113. apicilobum (M.). A singular looking dwarf form, with 
variable fronds, three or four inches or more in length, and two 
broad, widest upwards, the costa not extending to the apex, which 
is blunt and rounded in outline in all the examples we have seen ; 
the base is cordate, and the margin somewhat undulated, some- 
times cut in so as to form a rounded lobe, and the apex deeply 
cut into several obovate lobes. It was found in Guernsey by Mr. 
J. James of Vauvert. 
114. flavo-tinctum (M.). A curious form, in which the fronds 
are elongated and multifid, or abbreviated and abrupt; the base is 
cordate, and the margin undulate here and there lobed as in 
variabile (107). Its peculiarity consists in the colour of the fronds, 
which between the veins near the costa are yellowish, the yellowish 
tinge passing outwards in streaks between the veins. It appears to 
retain this striate character. The plant was found at Nettlecombe 
by Mr. Elworthy. 
To this group may be added cornuto-abruptum (19). 

