9. Drepanocladus (Müll. Hal.) G. Roth 镰刀藓属 lian dao xian shu
Hedwigia 38(Beibl.) 6. 1899. Hypnum subsect. Drepanocladus Müll. Hal., Syn. Musc. Frond. 2: 321. 1851.
Drepanocladus subgen. Limprichtia (Loeske) Podp., Consp. Musc. Eur. 588. 1954. Limprichtia Loeske, Hedwigia 46: 305. 1907.
Plants usually large, rather robust, green, yellowish green, or brownish, slightly glossy, in dense mats. Stems prostrate, erect or ascending, irregularly branched or regularly pinnately branched; pseudoparaphyllia foliose. Stem leaves usually falcate-secund or hooked, somewhat concave, usually plicate, oblong-lanceolate or ovate-lanceolate; slightly decurrent at base; margins plane, entire or nearly so; costae single, reaching ca. 1/2 the leaf length or longer, usually percurrent or sometimes excurrent; median leaf cells linear, smooth; basal cells short, broad, somewhat incrassate, porose; alar cells distinctly differentiated, sometimes extending close to costa at leaf base, hyaline, thin-walled, sometimes colored, thick-walled, often forming obvious auricles, occasionally not or hardly differentiated. Dioicous, rarely autoicous. Inner perichaetial leaves erect, elongate-lanceolate, plicate. Setae slender, elongate; capsules inclined or horizontal, ovoid, arching curved, mouth constricted when dry or after dissemination; annuli differentiated; cilia 2–4, nodulose. Spores yellowish or yellowish brown, smooth or finely papillose.