6. Hygrohypnum ochraceum (Wilson) Loeske 褐黄水灰藓 he huang shui hui xian
Moofl. Harz. 321. 1903. Amblystegium ochraceum (Wilson) Lindb., Musci Scand. 33. 1879. Hypnum ochraceum Turner ex Wilson, Bryol. Brit. 400. 58. 1855. Type: England.
Plants medium-sized to rather large, yellowish green, in loosely caespitose mats. Stems prostrate, to ca. 10 cm long, denuded in older parts, irregularly or sparsely branched, sometimes curved at tips; in cross section cortical cells large, hyaline; central strand weakly differentiated; pseudoparaphyllia few, foliose. Stem leaves falcate-secund, broadly ovate, oblong-lingulate or lanceolate, ca. 2.0 mm × 0.8 mm, concave, acuminate, acute or blunt at apex; margins entire, or serrulate at apex; costae strong, forked, ending at mid-leaf; median leaf cells vermicular, 60–70 mm × 6–7 mm, thick-walled; alar cells rectangular, enlarged, hyaline, forming a distinctly delimited group. Dioicous. Inner perichaetial leaves gradually long acuminate, ca. 4.5 mm × 0.9 mm; costae single or forked, reaching leaf apex. Setae 12–17 mm long, curved, reddish brown; capsules inclined, oblong-cylindrical; annuli in 2–3 rows; endostome segments carinate; cilia 2–3, nodulose, nearly smooth. Spores 13–18 mm in diameter, minutely papillose.