31. HEDWIGIDIUM. B. & S.
191. H. imberbe. B. & S. St. 1-3in. irregularly, not dichotomously branched, flagelliferous; l. ovate-lanceolate, acuminate, imbricate when dry, margin recurved, apex not diaphanous, but slightly crenate; caps. exserted on a short seta, spherical or obovate; lid with a blunt slightly oblique beak; calyptra cucullate, reddish.
Rocks. Wales and Ireland. X. XI.
32. GRIMMIA. Ehr. B. & S.
Sect. I. Schistidium. Caps. smooth, immersed on a very short straight seta, calyptra small, cleft at base into several lobes.
192. G. confertum. B. & S. Cæspitose; intense green
above, blackish below; l. ovate-lanceolate, tapering in the
upper ones to a short hair point; margins slightly recurved
and thickened, nerve strong, deeply channelled on its upper
side; caps. small ovate, with a rostellate lid, almost pellucid;
per. teeth much perforated, pale or orange red.
Rocks, Scotland. II. III.
β. urceolare. caps. urceolate; leaves with white
points.
γ. obtusifolium. l. all obtuse, shorter and broader.
δ. incana. (G. pruinosa. Wils. MS.) more robust, per. l. broader with long hair points; caps. more elongate, per. teeth stronger, nearly entire red. [Dr. Braithwaite, Jour. Bot., N. S., vol. I., 195.] Trap rocks. King's Park (Greville); Arthur's Seat, Edinburgh (Bell); Fife (Howie).
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