1. Ditrichum aureum Bartr. 金黄牛毛藓 jin-huang niu-mao xian
Ann. Bryol. 8: 7. f. 1. 1935. Type. China: Kweichow (Guizhou), Hui Hsiang-ping, alt. 1,500 m, on soil, S.-Y. Cheo 835 (holotype FH).
Plants slender, ca. 1.0 cm high, yellowish green to golden yellow, not shining, in dense tufts. Stems erect, simple or branched, sparsely radiculose below. Leaves flexuose, falcate-secund, 5–6 mm long, suddenly narrowed from an ovate base to a long, lanceolate, keeled-concave subula; margins plane, minutely denticulate above; costa flat, ca. 150 µm wide at leaf base, long-excurrent; upper leaf cells narrowly rectangular to linear, obscure; basal leaf cells rectangular, ca. 10 µm wide, pellucid. Autoicous. Perichaetial leaves strongly sheathing at base, suddenly elongate to a slenderly tapering and denticulate subula. Setae thin and slender, orange-red, ca. 5 cm long; capsules inclined, ovoid-cylindric, ca. 3 mm long, asymmetric, narrowed at the mouth, blackish brown, smooth; opercula obliquely conic-rostrate, ca. 0.75 mm long; peristome teeth ca. 170 µm long, dark brown, densely papillose; basal membrane ca. 50 µm high. Spores 12–15 µm in diameter, dark brown, smooth.