7. Ulota reptans Mitt. 匍匐卷叶藓 pu fu juan ye xian
Trans. Linn. Soc. London, Bot. 3: 161. 1891. Type: Japan. Fujisan, Bisset s.n.
Plants small, slender, dark green above, black below, in loose mats. Stems prostrate, remotely branched; with nearly erect branches. Leaves appressed and inflexed when dry, orange-yellow, ovate and concave at the base, lanceolate above, 2.3–2.5 mm × 0.6–0.8 mm, acute, or more or less obtuse at the apex; margins plane; costae slender, subpercurrent; median leaf cells almost quadrate or oblong-oval, 6–9 µm × 6–9 µm, inflate, usually papillose; gradually becoming elongate toward base; lower cells narrowly rectangular to sublinear, 20–40 µm × 5–6 µm, hyaline or brown; alar cells consisting of 3–6 rows of hyaline, rectangular cells, thick-walled. Autoicous. Inner perichaetial leaves ca. 2.2 mm long; perigonial leaves ca. 0.6 mm long; paraphyses absent. Setae 1.5–2.0 mm long; capsules oblong-ovoid to cylindrical, 1.7–2.0 mm × 0.7–0.8 mm; opercula rostrate ca. 0.6 mm long; exostome teeth ca. 350 µm long, reflexed when dry, finely papillose; endostome segments reduced. Calyptrae mitrate, ca. 1.5 mm long. Spores 22–28 µm in diameter, papillose.