THE COMMON HART'S-TONGUE FERN. 161 
sometimes the fronds are forked below and the branches are again 
divided. It was found in Guernsey by Mr. James, and is of rather 
variable character. 
40. subvariegatum (Woll.). The fronds of this form are faintly 
streaked or flecked with dull straw-colour, which gives them a mealy 
or subvariegated appearance; the pale colour being apparently 
owing to some disorganisation of the tissue. The fronds are six 
inches to a foot long, extremely various in shape: ramose, or 
multifid, or both, indeed they are almost always divided at the 
point; irregular, sub-lobate, undulated, crenate, or here and there 
laciniate, generally cordate at the base, sometimes however, as in 
sagittifolium (7), producing an acute auricle. They are profusely 
fertile, and they are also prone to send out a midsummer shoot, to 
which all Ferns are liable in a slight degree; this, however, has 
been observed to produce a stipitate frond from the apex of the larger 
one, the stipes of the second frond being thickly clothed with 
scales as in the first. It was found by Mr. Wollaston at Glanville’s 
Wootton, in Dorsetshire. [Plate LXXXVI B.] 
41. rimosum (M.). A large growing vigorous very handsome 
permanent form, the fronds of which grow from a foot to eighteen 
inehes in length, and vary from one to two inches in breadth; the 
base is cordate; the margin subundulate, sublobate, and crenate, 
becoming deeply inciso-crenate towards the apex, which is often once 
or twice divided in a lobate manner. The fronds are sometimes more 
deeply inciso-lobate nearly throughout. From the margin inwards, 
especially in the crenated parts, the upper surface is sulcate, with 
here and there a thickened prominent point, so that the surface is 
uneven as in scabrum (81). The plant, which is abundantly fertile, 
was found in Guernsey by Mr. James. Mr. Wollaston has raised 
the same variety from spores of a fine form of submarginatum (74) 
obtained at Glanville’s Wootton, in Dorsetshire. 
42. lanceolum (M.). A dwarf form with lance-shaped fronds, 
narrowed and cordate at the base, attenuate at the apex, the margin 
coarsely crenate and wavy. It was found in the island of Guernsey 
by Mr. James. 
43. crenato-lobatum (M.). A vigorous and elegant form, normal 
in size and general outline, but the margin, especially in the upper 
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