1. Lindbergia brachyptera (Mitt.) Kindb. 细枝藓 xi-zhi xian
Eur. N. Amer. Bryin. 1: 13. 1897. Pterogonium brachyptera Mitt., J. Proc. Linn. Soc., Bot. 8: 37. 1864. Type. British North America.
Lindbergia austinii (Sull.) Broth., Nat. Pflanzenfam. I(3): 993. 1907. Lindbergia brachyptera var. austinii (Sull.) Grout, Moss. Fl. N. Amer. 3: 196. 1934. Leskea austinii Sull., Icon. Musci Suppl. 81. 1874.
Plants medium-sized, dark green to brown, dull, in tufts. Stems creeping, up to 2–3(–5) cm long, with abundant rhizoids, irregularly or somewhat pinnately branched; branches slender, straight or sometimes curved, ca. 1(–2) cm long, attenuated at apex; paraphyllia few to abundant, linear to narrowly lanceolate. Leaves appressed, slightly secund when dry, spreading when moist, broadly ovate to oblong-ovate at base, gradually or rapidly tapered to a lanceolate apex, (0.6–)0.8–1.1 mm × (0.35–)0.40–0.50 mm; margins plane or slightly incurved, smooth, entire, sometimes slightly revolute at base; costa single, thick, strong, ending at 2/3 the leaf length; upper and median leaf cells rounded quadrate to rounded polygonal, 12–20 µm × 8–12 µm, unipapillose, thick-walled; basal cells near margins flatly rectangular, 12–17 µm × 5–8 µm, in several rows. Monoicous. Setae erect, 5–7(–10) mm long; capsules erect, symmetric, shortly cylindrical; peristome single, pale yellowish, narrowly to somewhat broadly lanceolate, 200–230 µm long, 40–78 µm wide, papillose; opercula conic, with short blunt beaks. Spores not seen.