Scotch mountains. Summer.

27. TORTULA. Schreb.

Sect. I. Aloidella. L. rigid, covered on the upper side with articulated cellular filaments or gemmæ arising from the broad nerve.

148. T. stellata. Schreb. 1771. (T. rigida. Schultz,) St. minute, loosely cæspitose; l. spreading from an upright base oblong obtuse, margin inflexed membranaceous; caps. erect elliptical; lid with a long oblique beak; calyp. half as large as capsule; per. teeth long, and much twisted; dioicous.

Limestone walls. XI. XII.

149. T. ambigua. Br. & S. (larger in all its parts than last.) L. ligulate lanceolate, apex cucullate, margin incurved; caps. erect cylindrical; lid rostrate; calyp. very short; per. teeth filiform, little twisted; arcuato-incurved when dry: dioicous.

Walls and banks (marly). XI. XII.

150. T. aloides. Br. & S. St. as above; l. spreading, narrowly lanceolate, acute, with a strong nerve; caps. cylindrical inclined; lid conical, bluntly rostrate; per. teeth scarcely twisted, when dry widely spreading: dioicous.

Clay banks. XI. XII.

Sect. II. Cuneifoliæ. L. broadly or spathulato-lanceolate.