12. Dicranum himalayanum Mitt. 喜马拉雅曲尾藓 xi-ma-la-ya qu-wei xian
J. Proc. Linn. Soc., Bot., Suppl. 1: 14. 1859. Syntypes. India: Sikkim, J. D. Hooker 71, 71b, 88.
Plants medium-sized to large, up to 4 cm high, dull green or yellowish green, shiny, in dense tufts. Stems erect, reddish brown, simple or dichotomously branched, densely foliate. Leaves ca. 10 mm × 1.0–1.2 mm, slightly flexuose when dry, falcate-secund, homomallous when moist, lanceolate, gradually narrowed to a long, canaliculate acumen; margins plane, usually entire throughout, or slightly serrulate near the apex; costa slender, brownish, percurrent, smooth at the back; upper cells elongate, rhomboidal to rounded rectangular, thick-walled, porose; basal cells similar to upper cells, but broader, 45–55 µm × 15–18 µm, strongly thick-walled, porose; alar cells inflated, not bulging, thick-walled, bi- to tristratose, deeply reddish brown at margins, hyaline near the costa. Dioicous. Inner perichaetial leaves high convolute-sheathing at base, suddenly narrowed to a short, hairpoint. Setae single, straight, up to 1.8 cm long, brownish, curved in the upper part; capsules erect or slightly inclined, oblong-ovoid, ca. 3.5 mm × 1.3 mm, reddish brown; opercula conic-rostrate, ca. half as long as the urns; peristome teeth divided to the middle, papillose above, vertically striolate below, reddish brown. Spores 18–20 µm in diameter, brownish, papillose.