Damp rocks and walls. Blackhall, nr. Banchory, Dee side. Mr. Sim. _var._ δ. only and barren. [Dr. Braithwaite.] 54. W. COMMUTATA. Mitt. “L. from a sub-oblong base lanceolate, narrowed, keeled with the nerve, which vanishes below apex, cells nearly all elongated and pellucid; per. l. similar”; caps. turbinate, lid with a very oblique longish beak. Alpine rocks, Nant-y-Fydd, Wrexham (Mr. Bowman.) 55. W. TRUNCICOLA. De Not. In large dense bright green tufts; st. 1–2in. dichotomous, reddish, radiculose below; l. erect when moist and often secund on the young shoots, rather soft, papillose at back, from a narrowly lanceolate base gradually subulate channelled, thinly nerved nearly to apex, margin not revolute, sharply denticulate above and on the back of the nerve; strongly cirrhate and twisted when dry; basal cells large cylindraceo-vesicular, the rest small quadrate or sub-hexagonal, filled with chlorophyll. [Dr. Braithwaite, Jour. Bot., IX., 290.] Base of an oak trunk in Sutton Park, Birmingham. J. Bagnall, 27th Aug., 1870. 7. RHABDOWEISSIA. BRUCH. & S. 56. R. FUGAX. B. & S. St. ¼–½in. tufted; l. linear-lanceolate, acute, toothed near apex, margins plane; caps. ovate, somewhat striated; teeth of per. subulate, fugacious; lid with an oblique beak longer than capsule. Sub-alpine rocks, in crevices. VI. VII. 57. R. DENTICULATA. B. & S. St. longer than last, loosely tufted; l. lingulate or linear-lanceolate, strongly toothed half way from apex; caps. more distinctly striated when dry, teeth of per. lanceolate, persistent. Alpine and sub-alpine rocks. 8. CAMPYLOSTELIUM. BRUCH. & S. 58. C. SAXICOLA. B. & S. Minute; l. elongate, linear-lanceolate, crowded entire, twisted, nerved nearly to summit; caps. elliptical drooping, on a geniculate pedicel, annulus double, calyptra 5–cleft. at base. Sandstone rocks, rare. XI. 9. BRACHYODUS. NEES. & H. 59. B. TRICHODES. N. & H. Very minute; l. lanceolate-subulate, almost setaceous; erect, with an excurrent nerve forming half the leaf; caps. erect, furrowed; per. very short, annulus large, lid flattish with a long beak. Sub-alpine sandstone rocks. Spring. 10. SELIGERIA. BRUCH & S. 60. S. PUSILLA. Bruch. & S. Minute, ⅛in. stems loosely tufted, simple or dichotomous; l. lanceolate-subulate, very narrow, thinly nerved nearly to apex; per. with teeth distantly barred; caps. on an upright pedicel, turbinate when dry, with a flattish beaked lid. Shady limestone rocks. IV. V. 61. S. TRISTICHA. Brid. Densely cæspitose, rigid; l. exactly tristichous, crowded, rigid, narrowly lanceolate, muticous, base whitish; caps. yellowish brown sub-spherical, with a tumid neck, lid large with a long oblique or arcuate beak; per. teeth narrower than in _calcarea_. Calcareous stones and rocks. Summer. Blair Athol, Glen Tilt, and Ben-y-Gloe. Rev. J. M. Crombie.