1. Trachyphyllum inflexum (Harv.) A. Gepp in Hiern 叉肋藓 cha le xian
Cat. Afr. Pl. 2(2): 299. 1901. Hypnum inflexum Harv. in Hook., Icon. Pl., 1: 24. f. 6. 1836. Type: Nepal.
Plants slender, yellowish green to dark green, often in thin, large mats. Stems prostrate, elongate, irregularly branched; branches short, erect or ascending, julaceous, often curved when dry. Leaves dense, appressed when dry, erect-spreading when moist, 0.4–0.7 mm × 0.2–0.5 mm, concave, cordate to ovate, abruptly narrowed to a slender apex; margins plane, entire or only minutely serrulate near the apex; costae double, forked; median leaf cells elliptical to oblong-rhombic, ca. 30 µm × 5 µm, often prorate; basal juxtacostal cells shortly rectangular, becoming quadrate at basal angles in a small group, sometimes with a few inflated cells decurrent forming a small auricle. Setae slender, ca. 15 mm long, yellowish brown, smooth, straight or slightly curved above; capsules oblong-ovoid, horizontal to inclined; opercula long conic-rostrate; peristome double; exostome teeth cross-striolate at base, papillose above; endostome segments narrowly lanceolate; basal membrane high; cilia 2. Spores not seen.