4. Entodontopsis setschwanica (Broth.) W. R. Buck & Ireland 四川拟绢藓 si chuan ni juan xian
Nova Hedwigia 41: 103. 1985. Stereophyllum setschwanicum Broth., Akad. Wiss. Wien Sitzungsber., Math.-Naturwiss. Kl., Abt. 1, 133: 581. 1924. Type: China. Sichuan, Yalung river, Handel-Mazzetti 5330 (holotype H).
Plants rather robust, yellowish green, glossy, in loose mats. Stems elongate, prostrate, remotely branched, densely foliate, with clustered rhizoids; branches short, blunt at tips. Leaves complanate, erectly appressed when dry, spreading when moist; dorsal leaves erect-patent, symmetric; lateral leaves larger, asymmetric, elliptical, ca. 2.37 mm × 0.9–1.0 mm, gradually narrowed to acuminate at apex; margins plane, entire, sometimes involute on one side; costae thick at base, slender upward, reaching above mid-leaf; median leaf cells linear-rhomboidal, ca. 125 µm × 8 µm; alar cells differentiated, quadrate or shortly rectangular, ca. 16 µm wide. Autoicous. Setae ca. 17 mm long, straight, smooth; capsules inclined, curved, elongate-ovoid or cylindrical, ca. 2.4 mm long; peristome double; exostome teeth ca. 250 µm × 65 µm, distinctly cross-striolate below, papillose above; endostome reduced; basal membrane low; cilia absent. Spores 16–21 µm in diameter, nearly smooth.