2. Haplocladium discolor (Par. & Broth.) Broth. 退色小羽藓 tui-se xiao-yu xian
Nat. Pflanzenfam. I(3): 1007. 1907. Bryohaplocladium discolor (Par. & Broth.) Watanabe & Iwats., J. Jap. Bot. 56: 259. 1981. Thuidium discolor Par. & Broth., Rev. Bryol. 31: 58. 1904. Type. Japan: Aomori Pref., Faurie 1875.
Haplocladium miser (Par. & Broth.) Broth., Nat. Pflanzenfam. I(3): 1007. 1907. Thuidium miser Par. & Broth., Rev. Bryol. 31: 59. 1904.
Plants small, soft, dark green, brownish when old. Stems procumbent, ca. 3 cm long, irregularly branched; central strand present; paraphyllia sparse, filamentous. Stem leaves appressed when dry, spreading when moist, ovate to oblong-ovate, with a widely lanceolate apex, ca. 1 mm long; margins serrate; costa reaching 3/4 the leaf length; median leaf cells quadrate to hexagonal, 5–15 µm wide, thick-walled, unipapillose; branch leaves oblong-ovate, with a short lanceolate apex, rarely obtuse. Perichaetial leaves up to 2 mm long, widely lingulate. Setae yellowish brown, 8–10 mm long; capsules erect to nearly erect or pendulous, oblong-cylindrical; peristome features the same as those of H. microphyllum (Hedw.) Broth. Spores papillose.