细叶小曲尾藓

Plants small, 5–6 mm high, yellowish green, gregarious or in loose tufts. Stems erect, simple; central strand absent. Leaves erect to loosely appressed when dry, erect-spreading when moist, lanceolate, 1–2 mm long, abruptly narrowed from an oblong-ovate, somewhat sheathing base to a long, subulate acumen; margins plane, entire or finely serrulate near the apex; costa slender, shortly excurrent, smooth at back; upper cells linear-rhomboidal; lower cells shorter, 16–30 µm × 4–6 µm, becoming subquadrate near the base. Dioicous. Perichaetial leaves differentiated, with a distinct sheathing base and a long, subulate acumen, somewhat squarrose. Setae straight, 3–4 mm long, yellowish brown; capsules oblong-ovoid, slightly curved and inclined; peristome teeth lanceolate, divided nearly to the middle, vertically striate and reddish brown below, sometimes perforate. Spores not seen.

Type. China: Shaanxi (Shen-si), Kin-qua-san, Giraldi 1936 (holotype B, probably destroyed; isotype H).

Specimens examined: GUIZHOU: Sui-yang Co., C. Gao 32937 (IFSBH). SHAANXI: see the type information cited above. SICHUAN: Chongiqing City, Go-lo Shan (Mt.), P.-C. Chen 13 (PE). XIZANG: Mo-tuo Co., Y.-G. Su 4457 (IFSBH, KUN). ZHEJIANG: Sui-chang Co., R.-L. Hong 2091 (HSNU, IFSBH).

Habitat: on wet soil near streams and near roadsides; Distribution: endemic to China.

Illustrations: Pl. 33, figs. 1–8.