Physcomitrium

Autoicous, paroicous, synoicous (not in Victoria) or polygamous (not in Victoria). Asexual reproduction rarely by rhizoidal tubers (not in Victoria). Scattered individuals or turves on soil. Stems simple or branched once, covered in rhizoids. Leaves ovate, obovate to oblong-lanceolate, erect- to wide-spreading when moist, scarcely altered, or crisped to contorted or incurved around capsule when dry; apex obtuse (not in Victoria), acute or acuminate (not in Victoria); costa single, sometimes weakly bifurcate, terminating in apical half well below apex or subpercurrent to short-excurrent (not in Victoria); margins entire to serrate, plane, sometimes with a border or more elongate cells (not in Victoria); laminal cells quadrate, oblong or oblong-hexagonal, becoming more oblong or rectangular toward base; alar cells poorly differentiated. Seta smooth. Capsules erect, symmetric, immersed or exserted, pyriform, hemispheric or globose, sometimes rostrate, operculate or cleistocarpous, annulus absent, a single row of cells or rarely more than one row of cells and revoluble (not in Victoria). Calyptra mitrate, minute or rostrate, smooth. Operculum plano-convex and rostrate, rarely conic (not in Victoria). Peristome absent.