1a. Tetraplodon angustatus (Hedw.) Bruch & Schimp. in B.S.G. var. angustatus 狭叶并齿藓原变种   xia-ye bing-chi xian yuan bian-zhong

Bryol. Eur. 3: 214 (fasc. 23–24. Monogr. 4). 1844. Splachnum angustatum Hedw., Sp. Musc. Frond. 51. 1801. Type. Lapland.

 

Plants medium-sized to rather large, 2–4(–8) cm high, yellowish green, in compact cushions. Stems erect, soft, rather loosely foliate. Leaves erect-flexuous when dry, erect when moist, narrowly oblong-lanceolate, rather gradually narrowed to a slenderly subulate apex; margins irregularly remotely dentate above; costa excurrent into a subula; upper leaf cells shortly rectangular or oblong-hexagonal; lower cells elongate and enlarged. Autoicous. Setae 2–5 mm long, thick, reddish brown; capsules slightly exserted above the perichaetial leaves, with oblong-ovoid or shortly cylindrical urns, light brownish, becoming reddish brown when old, apophyses well developed, ca. twice as long as the urns and distinctly broader than the urns, stomata present at base of necks; opercula bluntly low conic; annuli none; peristome teeth typical as in the genus. Calyptrae small, lobed at base. Spores not seen.