7. Tortula yuennanensis P.-C. Chen 云南墙藓 yun-nan qiang xian
Hedwigia 80: 299, f. 73. 1941. Type. China: Yunnan, Bi-jiang, Pe-tsao-lin, S. Ten 99 p.p.
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.