21. Warburgiella C. Müll. ex Broth. 裂帽藓属 lie mao xian shu
Monsunia 1: 176. 1900.
Plants small, glossy, in dense mats. Stems elongate and twisted, prostrate, irregularly or pinnately branched; pseudoparaphyllia foliose; central strand not developed. Stem leaves and branch leaves similar in shape, falcate- secund or circinate, often concave, narrowly oblong-ovate to rounded ovate-lanceolate, serrulate near apex, subentire below; costae short, double, or absent; leaf cells narrowly rhomboidal to linear, smooth or prorate; basal cells yellowish, inflated, rounded oval, hyaline. Autoicous. Inner perichaetial leaves similar to the vegetative leaves. Setae slender, reddish, smooth or papillose above, 2.0–3.5 cm long; capsules horizontal or pendent, papillose at neck when mature, constricted below mouth; opercula slenderly rostrate; annuli not differentiated; exothecial cells not collenchymatous; peristome double; exostome teeth papillose above, cross-striate below, outer surface furrowed; endostome segments keeled, perforate along median line; basal membrane high; cilia 2, nodulose. Calyptrae cucullate to campanulate, covering large part of capsules, smooth, lobular at base. Spores small, finely papillose.