具齿丛藓

Plants small, to 10 mm high, in dense tufts. Stems erect, simple, rarely branched. Leaves often crowded at the stem tips, ovate to obovate, abruptly acute, shortly awned; margins entire, plane, clearly bordered; costa shortly excurrent, ending in a short awn; upper leaf cells quadrate to hexagonal, thin-walled, minutely pluripapillose on both sides; basal cells rectangular, smooth. Dioicous. Setae elongate, ca. 15 mm long; capsules ovoid; opercula conic-rostrate, shortly rostrate; peristome teeth very short, erect, linear-lanceolate, densely papillose.

Type. Europe.

Chinese specimens examined: NEI MONGOL: He-lan Shan (Mt.), Z.-G. Tong 1178 (PE). XIZANG: Long-zhi Co., M. Zang 1166 (HKAS).

Habitat: on rocks or forest ground in shade; Distribution: China, Japan, western Asia, Europe, and North America.

Illustrations: C. Gao (ed.) 1996 (Pl. 78, figs. 5–8).