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: dioicious.
Clay banks. XI. XII.
Sect. II. Cuneifoliæ. L. broadly or spathulato-lanceolate.
151. T. lamellata. Lindb. (Pottia cavifolia var. gracilis. Bry. Brit.) St. very short cæspitose; l. rather lax erecto-patent, concave, lower smaller, roundish oval, piliferous, upper larger oval spathulate, nerve excurrent into mucro; caps. oblong sub-cylindrical, striate when dry, on a long red seta; lid with a long rather oblique beak; perist. that of a true Tortula, but so fragile as to have escaped notice, and always falling off with the operculum according to Dr. Schimper: monoicous.
Banks and walls, Oxford (Boswell) Pontefract, Edinburgh (Nowell); Aldrington (Davies). II.
