8. Ulota robusta Mitt.   大卷叶藓   da juan ye xian

J. Proc. Linn. Soc., Bot. Suppl. 1: 49. 1859. Type: India (Sikkim). Hooker 216 (lectotype, BM).

Ulota bellissima Besch., Ann. Soc. Nat. Bot., sér. 7, 15: 57. 1892. Type: China. Yunnan, Koua-la-po (Ho-kin), Delavay 1647 (isotype H).

Orthotrichum robustum Wilson, Hooker’s J. Bot. Kew Gard. Misc. 9: 327. 1857, nom nud.

 

Plants medium-sized, golden brown above, black below, in loose tufts. Stems ca. 2 cm long, rarely to 4 cm long, simple or dichotomously branched. Leaves densely arranged, strongly crisped when dry, erect-spreading and stiff when moist, narrowly lanceolate from an ovate base, ca. 5.0 mm × ca. 0.9 mm, acute; margins entire, sometimes revolute; costae subpercurrent, keeled; upper leaf cells rounded-quadrate, ca. 9.6 µm wide, thick-walled, papillose; median cells somewhat elongate, ca. 11 µm long; lower cells linear, ca. 77 µm × ca. 11 µm, very thick-walled, rarely papillose; basal marginal cells rectangular or rhomboidal, ca. 31 µm × ca. 11 µm, forming differentiated border, consisting of two rows of smooth, thin-walled cells. Autoicous. Setae ca. 6 mm long, straight or curved, or twisted when dry; capsules more or less erect, oblong-ovoid, ca. 2.0 mm × ca. 0.7 mm, 8-furrowed when old, with a narrow apophysis; exostome teeth in 8 pairs, reddish brown, densely papillose; endostome segments rudimentary or not clear. Calyptrae hairy. Spores reddish brown, ca. 32 µm in diameter, papillose.