8. Encalypta tibetana Mitt. 西藏大帽藓 xi-zang da-mao xian
J. Proc. Linn. Soc. Bot., Suppl. 1: 42. 1859. Type. China: Xizang (Tibet), T. Thomson 250 (holotype NY).
Plants rather small, 5–7 mm high, green above, brown below. Stems simple; central strand not well developed. Leaves slightly twisted when dry, erect-spreading when moist, 1.7–2.3 mm, lingulate, gradually narrowed to an obtuse apex; margins plane; costa single, stout, ending below or at the apex; upper cells irregularly rounded to quadrate, 13–15 µm wide, densely papillose; basal cells oblong, 26–39 µm × 15–18 µm, with reddish brown and slightly thickened transverse walls; 3–4 rows of marginal cells linear, 30–50 µm × 3–5 µm, thin-walled. Autoicous. Perichaetial leaves similar to upper stem leaves. Setae erect, 3.5–7.0 mm long; capsules oblong-ovate, erect, about 1 mm long, mouth contracted, with distinct reddish longitudinal ribs; peristome single teeth, lanceolate, hyaline above, yellowish and perforate below, densely papillose throughout; opercula with a long, straight beak. Calyptrae short-cylindric, covering the whole capsule, golden to golden brown, basal margin smooth or nearly so, with short rostrum, 0.3–0.4 length of calyptra. Spores 31–34 µm in diameter, with regular, large, warty papillae.