6. Schistidium subconfertum (Broth.) Deguchi 皱叶连轴藓 zhou-ye lian-zhou xian
J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot. 16(2): 240. 1979. Grimmia subconferta Broth., Symb. Sin. 4: 45. 1929. Type. China: Sichuan, Mu-li Co., alt. 4650 m, Handel-Mazzetti 7493 (holotype H; isotypes BM, E, S).
Plants small, only up to 1.5 cm high, yellowish green to brownish above, dark brown to blackish below, in rigid, dense tufts. Stems erect, frequently branched, without central strand in cross section. Leaves erect, imbricately appressed to stems when dry, spreading when moist, obtusely keeled above, 1.2–1.8 mm long, ovate-lanceolate to lanceolate, muticous or rarely with rather short, hyaline hair-points; margins entire, narrowly recurved on one side, bistratose above; costa stout, percurrent, gradually narrowed toward base, smooth on abaxial surface, consisting of nearly uniform cells in cross section; upper cells small, unistratose except at margins, irregularly quadrate, 4–5 µm wide, with incrassate and somewhat sinuose walls; median cells rectangular, 7–10 µm × 4–5 µm, with strongly sinuose walls; basal marginal cells short-rectangular to rectangular, more or less transparent, 10–23 µm × 4–7 µm, with nearly straight walls; basal juxtacostal cells elongate, 17–34 µm × 4–6 µm, somewhat transparent, with smooth walls. Autoicous. Perichaetial leaves large, ovate-lanceolate, cuspidate at apex; perigonia often located just below perichaetia. Setae yellowish brown, erect, 0.3–0.4 mm long, shorter than urns; capsules small, erect, immersed, oblong-ovoid, 0.7–0.8 mm long, smooth; exothecial cells oblate to quadrate, thin-walled; stomata present at base of urns; annuli wanting; opercula obliquely rostrate; peristome teeth vestigial, yellowish, densely papillose on both outer and inner surfaces. Calyptrae small, cucullate. Spores small, 7–9 µm in diameter, yellowish, smooth.