Scotch and Derbyshire mountains (calcareous). VI.
var. β. _densum._ densely cæspitose; l. straighter.
145. T. HOMOMALLUM. B. & S. St. scarcely ½in. cæspitose; l. subulato-setaceous from a broadish base, mostly secund, nerve broad, much excurrent; caps. erect oblong-ovate, brown on a long red seta; annulus present; lid short conical obtuse; basilar membrane of perist. very narrow.
146. T. SUBULATUM. Bruch. St. ¼in. cæspitose; l. subulato-setaceous from an ovate base, spreading or somewhat secund, with a long excurrent nerve; caps. oval, lid large obliquely rostellate; seta somewhat flexuose; annulus none; basilar membrane very narrow; antheridia axillary naked.
147. T. GLAUCESCENS. Hedw. St. ½in., branches fastigiate; l. glaucous, linear-lanceolate, margin plane (upper crowded into a tuft or coma), nerve sometimes excurrent into the denticulate apex; caps. oblong-oval, pale brown, with a long beaked lid; basilar membrane very narrow; barren fl. gemmiform.
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.
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.
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.
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.