8. Ectropothecium wangianum P.-C. Chen 密枝偏蒴藓 mi zhi pian shuo xian
Sunyatsenia 6: 192. 1941. Type: China. Hainan, Bai-po, T. He 1122 (holotype PE).
Plants rather robust, pale green, glossy. Stems elongate, prostrate, densely pinnately to bipinnately branched, branches equal in length, ca. 7 mm long. Stem leaves erect-spreading, falcate, broadly ovate- to elliptic-lanceolate, 0.7 mm × 0.3 mm, concave, slenderly acuminate, serrulate at apex; costae double, extending to 1/3 the leaf length; median leaf cells narrowly rhomboidal, somewhat thick-walled; basal cells lax, smooth; alar cells few, small, quadrate or hexagonal, hyaline; branch leaves smaller than stem leaves. Autoicous. Perichaetial leaves plicate, suddenly filiform at apex, margins bluntly denticulate. Setae reddish, ca. 12 mm long; capsules inclined, ovoid to ellipsoid, ca. 1 mm long; peristome teeth reddish yellowish, cross-striate; endostome segments with 2 cilia on low basal membrane. Calyptrae not seen. Spores 10–12 µm in diameter, brownish, nearly smooth.