1. Leptohymenium hokinense Besch. 鹤庆薄膜藓 he qing bao mo xian
Ann. Sci. Nat., Bot., ser. 7, 15: 84. 1892. Type: China. Yunnan, Hokin, Delavay 1628.
Plants slender, medium-sized, stiff, yellow to brownish green, slightly glossy. Main stems prostrate, sometimes arcuate or erect-spreading, usually irregularly 1–3-pinnately branched, rarely shortly branched, branches round, often with flagelliform branchlets; paraphyllia absent; rhizoids few. Stem leaves and branch leaves more or less differentiated; broadly ovate or rounded-ovate, sometimes slightly decurrent at base, usually plicate, shortly to slenderly acuminate at apex, sometimes slightly curved; margins serrulate above, sometimes involute at base; costae double, reaching to the midleaf or shorter; laminal cells linear, sometimes slightly prorate; alar cells slightly differentiated, shortly quadrate, loose, thin-walled, hyaline; branch leaves smaller, elongated ovate-lanceolate, sometimes slightly concave, costae double. Dioicous. Inner perichaetial leaves sheathing at base, gradually narrowed toward apex, remotely toothed at apex. Setae thin, long, sometimes slightly twisted; capsules shortly cylindrical, symmetrical, erect, with a short apophysis; annuli not differentiated; opercula conic, shortly rostrate; peristome double; exostome teeth narrowly lanceolate, brownish yellow, trabeculate, outer surface not cross-striate; endostome segments slightly higher than the teeth, keeled, narrowly perforated; yellow, usually finely papillose above, basal membrane high. Calyptrae cucullate, smooth. Spores spherical, finely papillose, 17–25 µm in diameter.