Ecology: High open montane to humid puna, possibly páramo; on rocks. Elevation: 3300-4400 m (Colombia: 3300 m, Peru: 4400 m, Bolivia: 3300-4400 m). Distribution: Colombia to Chile, southeast Brazil; Africa and Southeast Asia.
Bryum paradoxum, like B. microchaeton, exhibit leaves widest at the base and gradually and evenly tapered (triangular-lanceolate) to the apex; in the former the basal marginal cells are short rectangular to subquadrate, shorter than the juxatcostal cells. Specimens: COLOMBIA. Cundinamarca: reported by Herzog (1934). BOLIVIA. Cochabamba: Herzog 4769 (JE); La Paz: Aldana 280 (LPB, MO, USZ).