1. Trachycystis flagellaris (Sull. & Lesq.) Lindb. 鞭枝疣灯藓 bian zhi you deng xian
Contr. Fl. Crypt. As. 10: 241. 1873. Flagellomnium flagellare (Sull. & Lesq.) Laz., Bot. Žurn. (Kiev) 2(1) 62: 1941. Rhizogonium flagellare (Sull. & Lesq.) Par., Index Bryol. 1110. 1898. Mnium flagellare Sull. & Lesq., Proc. Amer. Acad. Arts 4. 277. 1859. Type: Japan. Hakodate, Wilkes s.n.
Mnium simplicicaule C. Müll., Gen. Musc. Frond. 138. 1900, nom. nud.
Plants small to medium-sized, brownish green, in loose tufts. Stems erect, ca. 2.0 cm high, multi-branched, with flagelliform branches at top of stems. Stem leaves oblong-ovate or oblong- to ovate-lanceolate, ca. 2.5 mm × 0.8 mm, gradually acute; margins distinctly bordered, double-toothed above mid-leaf; costae percurrent, dentate at back near apex; leaf cells small, irregularly quadrate or hexagonal, ca. 12–15 µm wide, papillose on both sides of leaves; marginal cells bistratose, rectangular or obliquely rhombic, smooth; flagelliform branch leaves scale-like, margins entire; costae ending below the apex. Dioicous. Sporophytic features the same as those of the genus.