1. Eucladium verticillatum (Hedw. in Brid.) Bruch & Schimp. in B. S. G. 艳枝藓 yan-zhi xian
Bryol. Eur. 1: 93 (fasc. 33–36. Monogr. 3). 1846. Weissia verticillata Hedw. in Brid., J. Bot. (Schrader). 1800 (1): 283. 1801.
Plants 5–20 mm high, dark green to yellowish green or brownish, in dense tufts. Stems erect, usually repeatedly branched. Leaves 1.0–2.5 mm long, slightly contorted when dry, erect-spreading when moist, oblong-ovate at the base, gradually narrowed toward the apex, narrowly lanceolate, rounded or blunt at the apex; margins plane, entire at the leaf base, serrate above the base; costa stout, percurrent; upper leaf cells small, green, rounded-quadrate, 8–10 µm wide, thick-walled, papillose; basal cells larger, irregularly rectangular, thin-walled, smooth, hyaline, marginal cells linear. Setae slender, straight, 7–11 mm long; capsules erect, elliptic-cylindrical; annuli poorly developed, of one row of cells; peristome teeth yellowish brown, slightly twisted counterclockwise, 2–3-divided to the middle, often irregularly perforate, densely papillose; opercula conic, obliquely rostrate. Calyptrae cucullate, smooth. Spores 8–13 µm in diameter, pale yellowish, smooth.