2. Schistidium chenii (S.-H. Lin) T. Cao, C. Gao & J.-C. Zhao 陈氏连轴藓 chen-shi lian-zhou xian
J. Hattori Bot. Lab. 71: 69. 1992. Grimmia chenii S.-H. Lin, Biol. Bull. Dept. Biol. Coll. Sci. Tunghai Univ. 60: 747. 1984. Grimmia himalayana P.-C. Chen, Zhumulangma Feng Diqu Kexue Kaocha Baogao 227. 1962, nom. illeg. Type. China: Xizang (Tibet), Mt. Qomolangma, alt. 5450 m, VII 9, 1959, Xizang Exped. Team Botanical Group 86 (holotype PE).
Plants medium-sized, 1.5–2.0 cm high, dark green above, brownish green to brown below, in loose tufts. Stems erect, usually with numerous rhizoids at base, frequently branched from innovations, with well developed central strand in cross section. Leaves erect, imbricate, not contorted when dry, erect-spreading when moist, broadly ovate, strongly concave and cucullate, 1.6–2.8 mm long, rounded-obtuse to muticous at apex; margins incurved, bistratose above; costa single, slender, ending below the apex, consisting of nearly homogeneous, thin-walled cells in cross section; upper and median cells unistratose or in places bistratose, rounded-quadrate, 8–12 µm wide, thin-walled; basal marginal cells subquadrate to short-rectangular, 10–13 µm × 9–10 µm, thin-walled; basal juxtacostal cells rectangular, 13–26 µm × 8–10 µm, with thin or somewhat incrassate walls. Autoicous. Perichaetial leaves larger than stem leaves. Setae shorter than capsules, 0.4–0.5 mm long, straight; capsules immersed in perichaetial leaves, broadly ovoid, erect, 1.3–1.5 mm long, wide-mouthed after dehiscence; annuli absent; opercula with short, obtuse beaks, falling with columella attached; peristome single, teeth short, lanceolate, reddish brown, strongly perforate and papillose above, densely papillose in regular rows below. Calyptrae not seen. Spores yellowish brown, 11–13 µm in diameter, granulose.