1. Anoectangium aestivum (Hedw.) Spruce 丛本藓 cong-ben xian
Catalogus Muscorum fere Omnium quos in Terris Amazonicus et Andinis, per Annos 1849--1860, legit Ricardus Spruceus 5. 1867. Gymnostomum aestivum Hedw., Sp. Musc. Frond. 32, 2 f. 4–7. 1801. Type. Europe.
Anoectangium compactum Schwägr., Sp. Musc. Frond., Suppl. 1, 1: 36. 1811, nom. illeg.
Anoectangium euchloron (Schwägr.) Mitt., J. Linn. Soc., Bot. 12: 176. 1869. Gymnostomum euchloron Schwaegr., Sp. Musc. Frond., Suppl. 2, 2: 83. 1827.
Plants slender, light green to yellowish green, (5–)10–20 mm high, in dense tufts or cushions. Stems erect, simple. Leaves densely arranged, 1.0–1.7 mm × 0.2–0.3 mm, appressed when dry, erect-spreading when moist, broadly lanceolate, keeled at the upper parts, gradually acuminate to acute at the apex; margins plane, entire or crenulate at shoulder portion of the leaf base; costa strong, ending below the apex, never excurrent; upper cells irregularly quadrate, 5–8 µm × 6–10 µm, with large, rounded, dense papillae; basal cells oblong-quadrate to linear-rectangular, hyaline, smooth, thick-walled, occasionally papillose, but always smooth near the costa. Setae 0.5–1.5 cm long, yellowish; capsules cylindrical or oblong-obovoid. Spores dull yellowish, smooth.