1. Stereodontopsis pseudorevoluta (Reim.) Ando 拟硬叶藓 ni ying ye xian
Hikobia 3(4): 295. 1963. Hypnum pseudorevolutum Reim., Hedwigia 71: 64. 1931. Type: China. Jiangxi (Kwangsi), Yao-shan, Sin 3948a.
Hypnum percrassum Ando, J. Sci. Hiroshima Univ., Ser. B, Div. 2, Bot. 8: 8. f. 9. 1957.
Plants rather robust, brownish. Stems prostrate, up to 4 cm long, irregularly branched or remotely pinnately branched; branches 0.5–1.0 cm long, stems and branches often curved; in stem cross section epidermal cells not inflated, outer cortical cells in 2–4 layers, small, thick-walled, brownish, medullar cells large, lax, hyaline; central strand absent; pseudoparaphyllia small, lanceolate. Stem leaves ovate- or elliptical-lanceolate, 2.5–3.0 mm × 0.65–0.75 mm, concave, falcate-secund, slenderly acuminate; margins recurved nearly throughout, entire or serrulate above; costae double, short, separate at base; median leaf cells linear, 40–60 µm × ca. 2 µm, strongly thick-walled, porose, basal cells brownish; alar cells lax, hyaline or brownish, subquadrate, thick-walled; branch leaves smaller, 1.8–2.3 mm × 0.4–0.5 mm, median cells 30–50 µm × 1.2–1.5 µm, strongly thick-walled. Sporophytes not seen.