3. Lindbergia serrulata C. Gao, T. Cao & W.-H. Wang in P.-C. Wu 齿边细枝藓 chi-bian xi-zhi xian
Fl. Bryophyt. Sin. 6: 130. 2001. Type. China: Yunnan, Kunming City, Xishan (Mt.), X.-J. Li 3095 (holotype IFSBH; isotype HKAS).
Plants yellowish green, slightly shiny. Primary stems creeping, 2–3 cm long, lateral stems erect or ascending, long irregularly pinnately branched. Stem leaves broadly ovate, 1.1–1.2 mm × 0.4–0.6 mm, with a short apex; margins obviously serrulate above; branch leaves small, ovate, 0.6–1.0 mm × 0.35–0.40 mm; costa somewhat hyaline, slender, ending at middle of the leaf; upper and median leaf cells rhomboidal, 25–40 µm × 10–12µm, thin-walled, smooth, projecting at upper ends; basal cells near margins flatly quadrate to subquadrate, 10–20 µm wide, basal cells along costa elongated, 25–40 µm × 10–12 µm wide. Monoicous. Perichaetial leaves somewhat sheathing at base, 1.6 mm × 0.5 mm, hyaline, with a long acute apex. Setae ca. 1 cm long, yellowish brown, erect, smooth; capsules ellipsoid, erect, symmetric, with small mouth; annuli differentiated, consisting of two rows of thick-walled cells; peristome single, not involute when dry, deeply inserted in inner side of capsule mouth, teeth narrowly lanceolate, 0.30–0.35 mm long, verrucose, often two teeth growing together; opercula conical, with obtuse rostrum. Spores brown, spherical, 20–25 µm in diameter, finely papillose.