9. Campylopodium (C. Müll.) Besch. 扭柄藓属 niu-bing xian shu
Ann. Sci. Nat. Bot. sér. 5, 18: 189. 1873. Aongstroemia sect. Campylopodium C. Müll., Syn. Musc. Frond. 1: 429. 1848.
Plants small, slender, yellowish green to yellowish brown, in loose tufts. Stems erect, simple or sparsely branched. Leaves appressed, broadly ovate and sheathing at base, abruptly narrowed to a long-lanceolate subula; margins entire or serrulate at the apex; costa strong, filling all of the subula, with a median row of guide cells and several rows of stereids on either ventral and dorsal sides in transverse section; cells thin-walled, in the upper shoulder short-rectangular to elongate-oval, in the lower shoulder becoming narrowly rectangular; alar cells not differentiated. Dioicous or autoicous. Setae elongate, curved when moist, flexuose when dry; capsules erect or suberect, ovoid to cylindric, symmetric, with a short neck, striate when dry and empty; stomata present, superficial; annuli developed; opercula obliquely long rostrate; peristome teeth 16, brownish, divided to halfway down or lower, vertically striate below, papillose above. Calyptrae cucullate, smooth. Spores finely papillose, golden yellowish.