f
144 HANDBOOK OF BRITISH HEPATICÆ. HANDBOOK OF BRITISH HEPATICÆ. 145
recede downwards, so that the basal leaves have
a different appearance (fig. 102, lower leaves).
Colour yellow green. Perichætial leaves large,
roundish, divided into two or three acute lobes or
segments, paler than the cauline leaves. Calyx
globose, and concealed, then obovate, a little plicate
above, mouth contracted, and minutely dentate.
Capsule reddish brown, striate. Elaters bispiral.—
{Plate 3, fig. 43.)
Diplophyllum Hellerianum, Mes.
Stem ascending, branched, leaves bifarious,
two-lobed, conduplicate ; lobes acute, wi th a
tooth at the base, perichaetial leaves serrate ;
perianth terminal, obovate.
Jungermannia Helleriana, Nees in Lind.
S yn. p. 6 4 ; Ekart. Syn. Jung. t. 12, fig. 10 3 ;
Gott. and Rab. Exs. 303 ; Carr, and Pears.
Exs. No. 164.
On trunks.
Stems creeping, intricately interwoven. Leaves
complicate-concave, lower spreading, somewhat ascending,
dimidiate, or bifid for a third part down,
lobes equal, acute, entire or serrate ; involucral
leaves bifid or trifid, spinulosely-serrate ; perianth
ovate, contracted at the mouth. Stipules none.—
{Plate 3, fig. 42.)
Diplophyllum obtusifolium, Hook., Dum.
Stem ascending, simple ; leaves bifarious,
unequally two-lobed, conduplicate ; lobes
falcate, rounded at the apex ; perianth terminal,
ovate.
Jungermannia obtusijolia. Hook. Br. Jung,
t. 2 6 ; Eng. Bot. t. 2 5 1 1 ; Gott. and Rab.
Exs. 149, 277 ; Co o k e Hep. f. 54. Diplophyllum
obtusijolium, Dum. Rev. Jung. p. 16.
In mountain woods. (Fr. Mar. Apr.)
Growing in dense matted tufts, 2 or 3 inches
broad, firmly attached to the soil. Stems ascending,
or when crowded erect, seldom more than three
or four lines long, simple, . .
with innovations, dirty
green (fig. 103). Leaves
in two opposite rows,
horizontal, rather closely
imbricated, entirely concealing
the stem, smaller
at the base, somewhat
rounded, divided about
half way down into two
unequal vertical lobes ;
the inferior the largest,
oblong, a little curved on
one side, thus scimitarshaped
; the ' superior
103.
ovate or oblong-ovate,
closely adpressed diagonally to the larger lobe,
both obtuse at their apices, and rounded, margins
entire, except in a few terminal leaves, which are
microscopically crenate. Perichætial leaves larger
than the rest, more erect, a little waved at the
margins, enveloping the lower part of the calyx,
which latter is ovate or obovate, erect, plicate in
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