var. β. subflaccida. (T. oblongifolia, Bry. Brit.) L. with margins more or less revolute, crenulate, with minute papillæ.
156. T. canescens. Br. Simple gregarious or cæspitose,
hoary; l. lower obovate, upper oval-oblong, all concave,
with a recurved margin, and nerve excurrent into a long
hair-like point; caps. small oblong erect, with a long oblique
conical lid; basilar membrane broadish: monoicous.
Fairlight Glen, Hastings. (Mr. Jenner).
157. T. muralis. Timm. Short, cæspitose; l. oblong obtuse, margin recurved, nerve excurrent into a long hair-*like point; caps. oblong erect, with a long rostellate lid; basilar membrane narrow: monoicous.
var. β. incana. caps. small; l. oval-lanceolate, with
long hair points.
γ. æstiva. l. long linear-lanceolate, nerve scarcely excurrent.
δ. rupestris. larger and much branched; l. larger oblong, piliferous, caps. longer, curved.
Walls and stones (δ limestone). IV. V.
Sect. III. Barbula. L. naked, narrowly or ovate-lanceolate, in some species slightly cirrhate when dry.
158. T. mucronata. Brid. [Cinclidotus riparius β.
terrestris. Bry. Brit.] St. 1-2in. radiculose, branches
fastigiate; l. erecto-patent, long lingulate, concave, minutely
papillose on both sides, margin slightly recurved, nerve thick
