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Moss China | Family List | Moss China V. 2 | Pottiaceae | Tortula

7. Tortula yuennanensis P.-C Chen, Hedwigia. 80:299. 1941.

Plants slender, ca. 20–30 mm high, dark green above, reddish brown below, in dense tufts. Stems erect, irregularly branched, radiculose below. Leaves distant, contorted-curved when dry, spreading when moist, oblong-ligulate, rounded-obtuse, occasionally bluntly mucronate at apex, somewhat sheathing at base; margins slightly recurved in the lower half, entire or crenulate by projecting papillae, borders indistinct; costa stout, reddish brown, percurrent; upper leaf cells quadrate to hexagonal, thin-walled, each cell covered by several C-shaped papillae; basal cells sharply differentiated, rectangular, hyaline, smooth. Autoicous. Setae 10–20 mm long; capsules erect, cylindrical, reddish brown; peristome teeth irregularly linear-lanceolate, erect, densely papillose, with low basal membrane.

Type. China: Yunnan, Bi-jiang, Pe-tsao-lin, S. Ten 99 p.p.

Specimens examined: FUJIAN: Jian-ou Co., D.-K. Li 19134 (HKAS, SHM); Nan-qing Co., D.-K. Li 1302 (HKAS, SHM); Wuyi Shan (Mt.), D.-K. Li 17755 (HKAS, SHM). GUANGXI: Bai-se River, X.-J. Li 3002 (HKAS). NEI MONGOL: He-lan Shan (Mt.), Z.-G. Tong 1137b (PE). SHAANXI: Hua Shan (Mt.), P.-C. Chen 850 (HKAS). SICHUAN: Mu-li Co., M.-Z. Wang 23030 (PE). XIZANG: Long-zi Co., San-an-qu-lin, M. Zang 1365 (HKAS). YUNNAN: An-ning Co., M. Zang 81104 (HKAS); De-qin Co., X.-J. Li 81157 (HKAS); Gong-shan Co., Du-long-jiang, M. Zang 1319 (HKAS); Kun-ming City, Z.-M. Li 367b, 392c (HYUB); Li-jiang Co., X.-J. Li 85160 (HKAS); Wei-xi Co., X.-J. Li 19719 (HKAS); Zhong-dian Co., X.-J. Li 811488 (HKAS).

Habitat: on rocks or soil; Distribution: endemic to China.

Illustrations: Pl. 133, figs. 7–10.


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