1. Entodontopsis anceps (Bosch & Sande Lac.) W. R. Buck & Ireland 尖叶拟绢藓 jian ye ni juan xian
Nova Hedwigia 41: 103. 1985. Stereophyllum anceps (Bosch & Sande Lac.) Broth., Nat. Pflanzenfam. I(3): 898. 1907. Rhynchostegium anceps (Bosch & Sande Lac.) A. Jaeger, Ber. Thätigk. St. Gallischen Naturwiss. Ges. 1876–77: 372. 1878. Hypnum anceps Bosch & Sande Lac., Bryol. Jav. 2: 161, pl. 260. 1867. Type: Indonesia.
Plants slender, medium-sized, yellowish green, glossy, in loose mats. Stems prostrate, 2–3 cm long, irregularly branched, with shortly blunt branches, complanately foliate; stem elliptical in cross section; epidermal cells small, thick-walled, cortical cells large, thin-walled; central strand absent. Leaves loosely imbricate; dorsal leaves symmetric; lateral leaves somewhat larger, slightly asymmetric, spreading, in 2 ranks, elliptical, 1.5–2.0 mm × 0.5–0.8 mm, concave, narrowed toward base, slightly decurrent at base; margins serrulate near the apex; costae slender, reaching ca. 1/2 the leaf length; median leaf cells rhomboidal, 57–96 µm × 7–8 µm, thin-walled, smooth; apical cells shorter; basal cells broader; alar cells differentiated, irregularly quadrate or shortly rectangular, 10–20 µm × ca. 10 µm, clearly porose. Autoicous. Perigonia located near perichaetia, bud-like. Perichaetia on branches; perichaetial leaves ovate-lanceolate, narrowly acuminate, serrulate in the upper margins. Setae 7–8 mm long, reddish, smooth, slightly twisted above; capsules erect, oblong-ovoid, symmetric, neck distinct; opercula small, shortly obliquely rostrate; peristome inserted above the mouth; exostome teeth broadly lanceolate, blunt at apex, reflexed when dry, with zig-zag median line, cross-striolate below, papillose above; endostome segments shorter than the teeth, perforate, papillose; basal membrane ca. 1/3 the endostome height; cilia absent. Calyptrae cucullate, smooth. Spores spherical to ellipsoidal, ca. 30 µm in diameter, papillose.