ORTHOTRICHUM rivulare.
River Bristle-moss.
CRYPTOGAMIA Musci.
G en. Char. Caps, oblong, terminal. Outer fringe
o f 16 te e th : inner o f 8 or 16 bristles; or none.
Veil angular, mostly clothed with erect hairs.
Spec. Char. Stem branched. Leaves ovate, obtuse,
revolute, pointless. Veil toothed, naked.
S y n . Orthotrichum rivulare. Sm. Fl. Brit. 1266.
Turn. Muse. Hib. 96. t. 8.
C o m m u n ic a t e d from Ireland by Mr. Turner and Mr.
Templeton. It is found upon stones in rivulets, and has the
dull lurid hue usual in aquatic mosses.
The stems form loose tufts about two inches high, and are
branched, nearly level-topped, and leafy. The leaves are of a
dark dull green, spreading, ovate, obtuse, revolute, keeled,
without any hair-like point; when dry they become closely
pressed to the stem. Capsules terminating the branches, on
short stalks, enveloped with the leaves, ovate, yellowish-
brown, with 8 ribs. Veil pale brownish green, bell-shaped,
quite naked, with 8 ribs, the margin torn, the point acute
and brownish. Lid convex with a little straight point, the
margin red. Fringe pale brown, or yellowish ; the outermost
of 16 teeth, united or approximated in pairs; the inner of 16
inflexed, slender, minutely jointed bristles.