3. Bryoerythrophyllum gymnostomum (Broth.) P.-C. Chen, Hedwigia. 80:255. 1941; Didymodon gymnostomus Broth. in Handel-Mazzetti, Symb. Sin. 4: 39. 1929.
无齿红叶藓
Plants small, 0.7–1.0 cm high, yellowish green or reddish brown, in dense tufts. Stems erect, simple or branched, radiculose below. Leaves curved-contorted when dry, erect-spreading when moist, ovate-lanceolate, narrowly acute at the apex; margins entire, recurved nearly throughout; costa percurrent; upper leaf cells quadrate to hexagonal, rather thin-walled, densely multi-papillose, mostly C-shaped papillae, a few extreme apical cells smooth; basal cells irregularly rectangular, smooth. Dioicous. Setae ca. 8 mm long; capsules erect, cylindric, reddish brown.
Type. China: Yunnan, Nu-jiang (River), Handel-Mazzetti 9064 (holotype H).
Chinese specimens examined: HEBEI: Dong-ling (Mt.), L.-Q. Yu 345 (HKAS, MO). HENAN: Xi-chuan Co., H.-J. Yu 6218 (HKAS). JIANGSU: Ru-dong Co., S.-C. Hao 7 (HKAS). JILIN: An-tu Co., Koponen 36799 (H). LIAONING: Ben-xi Co., C. Gao 1123 (IFSBH). NEI MONGOL: He-lan Shan (Mt.), Z.-G. Tong 2023 (PE). SHANGHAI: Jin-shan Co., D.-K. Li 9504 (HKAS, SHM). SICHUAN: Lei-bo Co., Z.-T. Guan 8953 (HKAS); Xiang-cheng Co., S. He 31796 (MO). XIZANG: Cuo-na Co., M. Zang 7970 (HKAS). YUNNAN: Bi-jiang Co., M. Zang 5682 (HKAS); Teng-chong Co., X.-J. Li 294 (HKAS).
Habitat: on rocks or thin soil over rocks; Distribution: China and India.
Illustrations: Pl. 113, figs. 3–6.
