2. Leptocladiella psilura (Mitt.) Fleisch. 薄壁藓 bao bi xian
Musci Buitenzorg 4: 1205. 1923. Macrothamnium psilurum (Mitt.) Nog., Kumamoto J. Sci., Sect. 2, Biol. 11: 10. 1972. Stereodon psilurus Mitt., J. Proc. Linn. Soc., Bot., Suppl. 1: 112. 1859. Type: Nepal. Hooker 754.
Leptohymenium macroalare Herz., Hedwigia 65: 165. f. 7. 1925.
Plants delicate, usually dendroid. Branches simple, ca. 3 mm long, occasionally up to 10 mm long, somewhat arcuate, with a few branchlets. Stem leaves imbricately appressed when dry, ovate or oblong-ovate, acute or acuminate at apex, 1.50 mm × 0.65 mm, narrowly long-decurrent at base, concave or slightly plicate; margins crenate above, recurved below; costae single, elongate, usually forked at base; median leaf cells linear, 55–65 µm long, thin-walled, minutely prorate, becoming shorter toward base; alar cells large, 25–40 µm × 14–20 µm, rectangular or quadrate, clearly differentiated from other cells; branch leaves smaller than stem leaves, ca. 0.65 mm × 0.27 mm, oblong, concave, acute at apex; margins sharply serrate above, recurved; costae single, often forked at base, spinulosely projecting at tips; leaf cells more strongly prorate than stem leaf cells, especially in upper part. Setae slender, up to 3 cm long; capsules inclined, cylindrical, asymmetric, 2.0 mm × 0.75 mm; exostome teeth cross-striate below, densely papillose above; endostome segments linear-lanceolate. Calyptrae not seen. Spores not seen.