1. Hilpertia velenovskyi (Schiffn.) Zand. 卵叶藓 luan-ye xian
Phytologia 65: 429. 1989. Tortula velenovskyi Schiffn., Nova Acta Acad. Caes. Leop.-Carol. German. Nat. Cur. 58(7): 480, pl. 17. 1893. Type. Czech Republic: Prague, 1891, Velenovsky s.n.
Plants small, 6–10 mm high, brownish green or yellowish green, in dense or loose tufts. Stems erect, simple, rarely branched. Leaves imbricate, appressed when dry, weakly erect-spreading when moist, broadly ovate to circular, concave, 0.50–0.75 mm long, broadly acute at the apex, ending in a hyaline apical patch; margins strongly revolute, entire; costa slender, excurrent in a long, smooth, hyaline awn, nearly as long as the leaves; upper leaf cells hexagonal to short-rectangular, 12–16 µm wide, thin-walled, cells smooth except for marginal cells, mamillose or papillose on revolute margins; basal cells weakly differentiated, mostly short-rectangular, thin-walled, hyaline, smooth. Autoicous. Setae 7–12 mm long, reddish brown; capsules cylindrical, 1.5–2.5 mm long; peristome teeth linear, divided, densely papillose, with a very low basal membrane; opercula long conic-rostrate; annuli of 2–3 rows of quadrate, vesiculose cells, deciduous. Spores 10–12 µm in diameter, yellowish brown, finely papillose.