152. T. atrovirens. Smith. Lindb. [Didymodon nervosus, Hook & T. Desmatodon nervosus, Bry. Brit.] St. ¼in. densely cæspitose, branched; l. spreading oval or oblong concave, margins revolute, nerve thick, prolonged into a short mucro; areolæ small roundish larger and diaphanous at base; caps. oval-oblong, lid large conical with an oblique beak.
Dry banks, &c., near the sea.
153. T. cuneifolia. Dicks. Gregarious; st. simple; l. upper crowded oblong-lanceolate, acuminate, nerve sometimes excurrent, soft, pellucid, areolæ loose; lower broadly ovate aristate; caps. oblong erect, lid obtuse short; basilar membrane of perist. broadish: monoicous.
Banks, sea coast, rare. III. IV.
154. T. marginata. B. & S. St. simple gregarious or cæspitose; l. oblong-lanceolate or linear, margin thickened, nerve sometimes excurrent into a mucro; caps. oblong, lid very large, shortly rostrate; basilar membrane narrow.
Sandstone walls, rare. V. VI.
155. T. Vahliana. Schultz. Small, gregarious or cæspitose; l. lower oblong, upper oblong wedge-shaped, nerve excurrent subulate, margin reflexed; caps. narrow elongate cylindrical, brown, sometimes slightly incurved; lid shortly subulate, annulus broad; basilar membrane of perist. tesselate: monoicous. Differs from muralis in its broader softer leaves, narrower capsule, and longer basilar tube.
Damp clayey ground, on road sides, &c. Spring.
Sussex, 1863 (G. Davies); Woking, Surrey (Sheppard and Westell.)
