1. Ulota crispa (Hedw.) Brid. 卷叶藓 juan ye xian
Muscol. Recent. Suppl. 4: 112. 1819 . Systegium crispum (Hedw.) Schur, Enum. Pl. Transsilv. 866. 1866. Weissia crispa (Hedw.) P. Gaertn., B. Mey. & Scherb., Oekon. Fl. Wetterau 3(2): 94. 1802. Bryum crispum (Hedw.) With., Syst. Arr. Brit. Pl., ed. 4, 3: 810. 1801. Orthotrichum crispum Hedw., Sp. Musc. Frond. 162. 1801. Type: Europe.
Ulota crispa var. longifolia (Dixon & Sakurai) Z. Iwats., J. Hattori Bot. Lab. 21: 143. 1959. Ulota longifolia Dixon & Sakurai, Bot. Mag. (Tokyo) 49: 140. 1935.
Plants small to medium-sized, yellowish green or yellowish brown, in dense tufts. Stems erect, 0.5–2.0 cm long, sparsely branched. Leaves strongly crisped when dry, spreading when moist, lanceolate or narrowly lanceolate, 2–3 mm long, narrowly acute or acuminate, broader and concave at the base; margins plane or somewhat irregularly revolute; costae strong, subpercurrent; upper leaf cells rounded to oval, 8–10 µm wide, with simple or U-shaped papillae; lower cells narrowly rectangular or rectangular, 35–45 µm × 5–7 µm, with 4–10 rows of shortly rectangular, hyaline cells at basal margin, vertically thick-walled. Autoicous. Perichaetial leaves not differentiated. Setae 2–4 mm long; capsules exserted, oblong-cylindrical, 8-ribbed, with a long neck; exothecial cells differentiated, rectangular; opercula shortly rostrate; annuli brown; stomata present in the lower part of capsules; peristome double; exostome teeth 16, united in 8 pairs, triangular-lanceolate, ca. 0.2 mm long, reflexed when dry, finely papillose, often perforate near the apex; endostome segments 8, shorter than the teeth, smooth and hyaline. Spores 22–25 µm in diameter, finely papillose.