134 
Varieties having hieebrent Fronds on the same 
Eoot-stock. 
40. Variable Hartstongue. Yaridbile, W. Here we 
have different fronds on the same root-stock. Some are 
quite regular, with an unequal heart-shaped base, and just 
below is a kidney-shaped leaf, either with or without a stalk. 
Some fronds consist of one or two short kidney-shaped lobes 
as round as a penny with a gash beneath. Some are 
branched in the stalk, others near the base, and others near 
the head of the frond. The base is usually unequal and 
has one of these kidney-shaped lobes. M. Axminster, 
Charmouth, Hawkchurch, Seaton, Thorncombe, Wootton. 
41. Many-formed Hartstongue. Folymorplium. W. This 
plant, too, has different fronds, which are remarkable 
for their great breadth. Some are regular, some are notched 
with rounded lobes on the upper half'of the frond, and throw 
out a side branch almost as large as the main part ; some 
are rounded and waved with an obtuse bulging, like an 
arrested branch, near the base or at the side, some have a 
separate but overlapping kidney-formed lobe at the base. 
These all are from six inches to a foot in length. Some 
being shortened are two or three inches long, having the 
apex split with kidney-formed, overlapping lobes, or roundish 
with a conical elongation in the centre ; some are branched 
at the base into short forking branches so that they are 
either regular or much cleft at the tip, or branched, or 
have two or more of these characters combined. M. 
42. Abrupt Hartstongue. Ahruptum, M. This is 
remarkable for its abrupt apex, for its mid -rib not reaching 
the highest point, but being at least half an inch from it, 
and for the width of the frond being greater near the tip 
than at the base. It is from two to eight inches high and 
from an inch to three inches wide. Sometimes the apex is 
divided, and the plant occasionally produces dwarf, doubly- 
kidney-formed fronds. Thorncombe. 
