4b. Dicranella coarctata var. torrentium Card. 南亚小曲尾藓急流变种 nan-ya xiao qu-wei xian ji-liu bian-zhong
Beih. Bot. Centralbl. 19 (2): 92. 1905. Type. China: Taiwan, Taitum, Faurie 43 (holotype PC; isotype H).
Plants minute, 3–5 mm high, brownish green, in dense tufts. Stems erect, usually branched; central strand scarcely developed. Leaves erect, lanceolate to linear-lanceolate, 1.5–2.0 mm × 0.2–0.3 mm; margins plane, entire below, denticulate near the apex; costa percurrent, rather broad at base, occupying ¼ – ½ the leaf base width; leaf cells rather thick-walled. Capsules smooth to scarcely plicate when dry (fide Cardot 1905).