1. Aulacomnium androgynum (Hedw.) Schwaegr.   沼泽皱蒴藓   zhao ze zhou shuo xian

Sp. Musc. Frond., Suppl. 3, 1: 215. 1827. Fusiconia androgyna (Hedw.) P. de Beauv. ex Brid., Bryol. Univ. 2: 5. 1827, nom. illeg. Gymnocybe androgyna (Hedw.) Fries., Stirp. Agri Femsion. 27. 1825. Orthopyxis androgyna (Hedw.) P. de Beauv., Prodr. Aethéogam. 79. 1805. Mnium androgynum (Hedw.) Smith, Trans. Linn. Soc. London 7: 261. 1804. Bryum androgynum Hedw., Sp. Musc. Frond. 178. 1801. Type: Europe.

 

Plants small to medium-sized, green to yellowish green, in dense tufts. Stems erect, up to 2.5 cm high, branched, with rhizoids at base. Leaves not or somewhat decurrent at base, lower ones oblong-lanceolate to lanceolate; upper leaves linear-lanceolate; margins irregularly denticulate, involute; costae percurrent or ending below the apex, somewhat flexuous; leaf cells nearly uniform, small, rounded-hexagonal, thick-walled, unipapillose, strongly thickened at corners, resulting in stellate appearance; basal cells at the insertion not inflated, rounded-hexagonal, unistratose, with large papillae. Gemmae short-stalked. Dioicous. Setae 1.0–2.0 cm long; capsules erect when dry, inclined when mature, cylindrical, slightly curved, reddish brown; opercula shortly rostrate.