Page:Books from the Biodiversity Heritage Library (IA synopsisofbritis00hobk).pdf/48

 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.,, 290.]

Base of an oak trunk in Sutton Park, Birmingham. J. Bagnall, 27th Aug., 1870.

7. RHABDOWEISSIA.

56. B. & S. St. 1/4-1/2in. 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.

57. 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.

58. 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.

9. BRACHYODUS.

59. N. & H. Very minute; l. lanceolate-subulate, almost setaceous; erect, with an excurrent nerve