29. Rhabdoweisia Bruch & Schimp. in B.S.G. 粗石藓属 cu-shi xian shu
Bryol. Eur. 1: 95 (fasc. 33–36. Monogr. 1). 1846.
Plants minute to small, dull green or yellowish green, in dense tufts. Stems erect, simple or branched, somewhat radiculose at base; central strand absent or present. Leaves strongly crispate when dry, erect to erect-spreading when moist, lanceolate to oblong-lanceolate or narrowly lingulate, somewhat keeled, acute or obtuse at the apex; margins usually recurved on one side below, serrulate to serrate above; costa narrow, subpercurrent to percurrent, with well developed guide cells and a dorsal stereid band in transverse section, ventral stereid band poorly developed or absent; upper cells subquadrate or irregularly hexagonal, usually broader than long, smooth; lower cells rectangular, hyaline or pale brown, lax and thin-walled; alar cells not much differentiated. Autoicous. Setae elongate, upper part twisted when dry, straight when moist, yellowish; capsules exserted, erect, symmetric, ovoid to short-cylindric, slightly contracted below the mouth, deeply 8-ribbed when dry; opercula strongly obliquely long-rostrate, nearly as long as the urns; annuli none; stomata present; peristome teeth 16, inserted slightly below the mouth, slender and irregular, undivided, with a low basal membrane, smooth or faintly and irregularly striolate. Calyptrae cucullate, smooth, entire at the base. Spores spherical, brownish, densely papillose.