1. Ctenidium andoi Nishimura 柔枝梳藓 rou zhi shu xian
J. Hattori Bot. Lab. 58: 50. f. 23. 1985. Type: the Philippines. Luzon, Merrill 4939.
Plants soft, slender, pale green or yellowish green, in dense mats. Stems prostrate, ca. 2 cm long, irregularly branched, branches curved, flattened, ca. 6 mm long; pseudoparaphyllia broadly triangular, shortly acuminate. Stem leaves erect, slightly falcate, 1.1–1.5 mm × 0.5–0.8 mm, broadly ovate- to ovate-lanceolate, slenderly acuminate, twisted at apex, cordate at base, long decurrent, slightly plicate; margins recurved above, sometimes rugose, serrulate nearly throughout; costae double, ca. 1/5 the leaf length; median leaf cells 50–60 µm × 4–5 µm, prorate, thick-walled; alar cells shortly rectangular or rhombic, thick-walled, excavate alar cells distinctly differentiated, rectangular or elliptic; branch leaves flattened, nearly erect, or falcate-secund, 0.8–0.9 mm × ca. 0.3 mm, narrowly ovate-lanceolate. Dioicous. Inner perichaetial leaves erect, ovate- to triangular-lanceolate, rarely plicate, slenderly acuminate, curved at apex, serrulate at upper margins; costae double, separate at base, ca. 1/4 the leaf length, median cells thick-walled. Setae ca. 2 cm long, reddish brown, mostly smooth; capsules inclined to horizontal, ovoid or ellipsoid, ca. 1.8 mm × 1.0 mm, slightly curved; opercula shortly rostrate. Spores 12 µm in diameter.