2. Desmatodon cernuus (Hüb.) Bruch & Schimp. in B. S. G. 狭叶链齿藓 xia-ye lian-chi xian
Bryol. Eur. 2: 58 (fasc. 18–20 Monogr. 8. 5). 1843. Dermatodon cernnus Hüb., Muscol. Germ. 1833. Tortula cernua (Hüb.) Lindb., Musci Scand. 20. 1879. Type. Europe.
Plants small, ca. 4 mm high, dull green to yellowish green, in loose tufts. Stems simple, densely radiculose below. Leaves oblong-ovate to ovate-lanceolate, 2–3 mm × 0.5–0.7 mm, gradually acute to shortly acuminate or cuspidate at the apex; margins revolute in the lower half, plane above, entire near the base, crenulate to serrulate near the apex, not bordered or indistinctly bordered by somewhat elongate cells, yellowish; costa slender, ending at the apex; upper cells rounded quadrate to hexagonal, thin-walled, lightly papillose, with a few circular or C-shaped papillae; basal cells elongate, lax, hyaline. Setae slender, 1.5–2.0 cm long; capsules ovoid to oblong-ovoid, asymmetrical, suberect to horizontal.