23. Bryum leptocaulon Card. 纤茎真藓 qian jing zhen xian
Beih. Bot. Centralbl., Abt. 2, 19(2): 111. f. 12 1905. Type: China. Taiwan, Kelung, Faurie 90.
Plants medium-sized to rather large, 20–30 mm high, green to pale purple reddish, in dense tufts. Stems slender, erect, stiff, fragile, simple or rarely branched. Leaves erect, slightly appressed when dry, spreading when moist, ca. 1.5–2.0 mm long, oblong- to ovate-lanceolate, acuminate, decurrent at base, more or less recurved at base, plane above; margins nearly entire below, distantly serrulate above; costae excurrent, ending in rather long awns, dentate and reddish; upper and median leaf cells oblong-oval, rhombic, or hexagonal; lower cells rectangular or nearly so, pale reddish below; marginal cells narrower than the cells inside, to linear-rhomboidal, mostly bistratose. Dioicous. Sporophytes not seen.