Pottia sinensi-truncata C. Müll., Nuovo Giorn. Bot. Ital., n. ser. 5: 174. 1898. Type. China: Shaanxi (Schen-si), Zu-lu, Oct. 1896, P. J. Giraldi 2203 (isotype H). Pottia truncatula (With.) Buse, Musci Neerl. Spec. Exic. 67. 1858. Bryum truncatulum With., Syst. Arr. Brit. Pl. (ed. 4) 3: 801. 1801.

Plants very small, 3–6 mm high, in dense tufts. Stems erect, simple, rarely branched. Leaves crowded at the stem tips, ovate to ovate-lanceolate, shortly apiculate; margins entire, plane or sometimes crenulate near the apex; costa excurrent in a short awn; upper leaf cells short-rectangular to hexagonal, thin-walled, smooth; basal cells rectangular, smooth, hyaline. Autoicous. Setae elongate, 3–8 mm long; capsules erect, broadly obovoid; opercula conic-rostrate, persistent with columella; peristome teeth absent.

Type. Europe.

Chinese specimens examined: HEBEI: Xi-ling Shan (Mt.), Q.-W. Wang 1647 (PE). SHAANXI: Qin-ling (Mt.), P. J. Giraldi 1526, 1627 (H). SICHUAN: Bi-shan Co., P.-C. Chen 1062, 1081 (PE); Chong-qing City, P.-C. Chen 343, 619, 1153 (PE); Lin-shui Co., P.-C. Chen 1196 (PE); Wen-chuan Co., Z.-S. Qin 90 (PE); Yong-chuan Co., P.-C. Chen 1136 (PE). YUNNAN: Kun-ming City, Z.-M. Li 178 (HYUB).

Habitat: on rocks or soil walls in shaded and moist places; Distribution: China, Japan, western Asia, Russia, Europe, North and South America, and northern Africa.

Illustrations: C. Gao (ed.) 1996 (Pl. 78, figs. 12–14).