3. Barbula coreensis (Card.) Saito 朝鲜扭口藓 chao-xian niu-kou xian
J. Hattori Bot. Lab. 39: 484. 1975. Barbula paludosa Web. & Mohr var. coreensis Card., Beih. Bot. Centralbl. 17: 8. 1904. Streblotrichum croceum (Brid.) Loeske var. coreensis (Card.) Wijk & Marg., Taxon 8: 75. 1959. Type. Korea: Fusan, Faurie s.n.
Plants small to medium-sized, to 30 mm high, green, yellowish green, in loose tufts. Stems erect, simple or irregularly branched, often radiculose at base. Leaves contorted or crisped when dry, erect-spreading when moist, ovate-lanceolate, gradually acuminate to acute; margins entire, plane; costa stout, percurrent to excurrent as a short apiculus; upper leaf cells small, quadrate to short-rectangular, rather thick-walled, obscure, multi-papillose, with several C-shaped papillae; basal cells differentiated, narrowly oblong-rectangular, thick-walled, smooth, hyaline to light brown. Gemmae pyriform to globose, in leaf axils. Dioicous. Perichaetial leaves larger than stem leaves, sheathing and convolute at base, acuminate at apex. Mature sporophytes not seen.