5. Brachymenium jilinense T. Kop, A. J. Shaw, J.-S. Lou & C. Gao 吉林短月藓 jilin duan yue xian
Ann. Bot. Fenn. 22: 151. 1985. Type: China. Jilin, An-tu Co., Mt. Chang Bai, alt. 1800 m, T. Koponen 36796 (holotype H; isotypes IFSBH, PE).
Plants small, ca. 2–3 mm high, green above, brownish below, in loose tufts. Stems rarely branched. Leaves dense, erect-spreading, ovate-lanceolate, ca. 0.8 mm × 0.3 mm, lower leaves shorter, ca. 0.4 mm long, abruptly acute; margins plane, entire or serrulate above the mid-leaf, borders not differentiated; costae shortly excurrent; median leaf cells oblong-hexagonal to rhomboidal, 42–70 µm × 10–12 µm; basal cells rectangular. Dioicous. Setae 3–4 mm long, somewhat brownish; capsules ellipsoidal, brownish, inclined to horizontal, ca. 2 mm long; neck ca. 1/2 the length of urn; peristome double; exostome teeth short, papillose; endostome not well developed; basal membrane very low or absent. Spores 17–25 µm in diameter, minutely papillose.