3. Tetraplodon urceolatus (Hedw.) Bruch & Schimp. in B.S.G. 黄柄并齿藓 huang-bing bing-chi xian
Bryol. Eur. 3: 217 (fasc. 23–28. Monogr. 7). 1844. Tetraplodon mnioides var. urceolatus (Hedw.) Crum, Bryologist 72: 246. 1969. Splachnum urceolatum Hedw., Sp. Musc. Frond. 52. 1801. Type. Europe.
Tetraplodon mnioides var. cavifolius Schimp., Syn. Musc. Eur. 304. 1840.
Tetraplodon urecolatus var. longisetus C. Gao, Fl. Musc. Chin. Boreali-Orient. 379. f. 100: 11–14. 1977. Type. China: Heilongjiang, Da Xing An Ling (Greater Khingan Mt.), Ch. Wang 1680 (holotype IFSBH).
Plants small to medium-sized, 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, imbricately arranged, somewhat concave, oblong-ovate, abruptly narrowed to a shortly subulate apex; margins entire; costa slender, subpercurrent; upper leaf cells shortly rectangular; lower cells elongate, narrowly rectangular. Autoicous. Setae erect, 1.0–1.2 cm long, yellowish or yellowish brown; capsules erect, with shortly cylindrical urns, reddish brown, apophyses well developed, somewhat broader than the urns, pyriform, yellowish green when young, reddish brown when old, not wrinkled when dry; stomata numerous at neck; opercula bluntly conic; annuli none; peristome teeth typical as in the genus. Calyptrae not seen. Spores not seen.