2. Tetraplodon mnioides (Hedw.) Bruch & Schimp. in B.S.G. 并齿藓 bing-chi xian
Bryol. Eur. 3: 215 (fasc. 23–24. Monogr. 5). 1844. Aplodon mnioides (Swartz ex Hedw.) Nees & Hornsch. in Limpr. Laubm. Deutschl. 2: 160. 1891, nom. illeg. Splachnum urceolatum var. mnioides (Swartz ex Hedw.) Wahl., Fl. Suec. (ed. 2), 2: 768. 1826. Splachnum mnioides Swartz ex Hedw., Sp. Musc. Frond. 51. 1801. Type. Europe.
Tetraplodon bryoides Lindb., Musci Scand. 19. 1879.
Plants small to medium-sized, sometimes rather robust, usually 1–4 cm high, green or yellowish green, mixed with brownish rhizoids, in dense cushions. Stems erect, branched, radiculose at base. Leaves remotely foliate below, crowded above, erect, slightly contorted when dry, oblong-ovate, abruptly narrowed to a long-subulate apex; margins entire, marginal cells slightly yellowish; costa excurrent into a subula; upper leaf cells oblong-hexagonal to shortly rectangular; lower cells elongate, rectangular. Autoicous. Perichaetial leaves rounded-ovate at base, long slenderly subulate above. Setae erect, stout, 1.0–1.5 cm long, reddish brown; capsules erect, with cylindrical urns, yellowish green when young, reddish brown when old, apophyses well developed, somewhat broader than the urns above, narrower below, gradually tapered to the seta, somewhat wrinkled when dry; stomata numerous at neck; opercula bluntly conic; annuli poorly developed; peristome teeth typical as in the genus. Calyptrae not seen. Spores 9–12 µm in diameter, matured in late summer.