2734
DIDYMODON crispulus.
Curled Didymodon.
CRYPTOGAMIA Musci.
Gen. Char. Fruit-stalk terminal. Peristome single,
of 32 teeth in pairs. Calyptra dimidiate.
Spec. Char. Stems short, scarcely branched. Leaves
lanceolato-subulate, erect, with entire and slightly
incurved margins, channelled above, blunt and
concave at the summit; nerve suddenly inflexed
towards the apex and excurrent. Capsule oblong-
ovate, erect; lid rostrate.
Syn. Trichostomum crispulum. Bruch in Unio Iti-
ner aria.
Didymodon reconditus. Wils. MSS.
(jTATHERED, in June 1828, on the grassy limestone
declivities of the north coast of Anglesey, near Tros y
Marian, and on the Great Ormeshead.
Very nearly allied to D. brachydontius, another new
species found in similar situations, from which it may be
known by the blunt concave summits and brownish hue
of the nearly erect leaves; these are gradually widened towards
the base, and have a reddish opaque nerve curiously
bent at the summit like the keel of a boat: when dry, they
are much curled.—W. W.