Studies in Austral Bryaceae (Bryopsida). III. A Preliminary Account with Keys to Rosulabryum J. R. Spence in Chile Author Spence, John R. https://orcid.org/0000-0002-6360-5512 California Academy of Sciences, Department of Botany, 55 Music Concourse Drive, Golden Gate Park, San Francisco, USA bryum500.js@gmail.com text PhytoKeys 2021 2021-11-15 185 87 98 http://dx.doi.org/10.3897/phytokeys.185.70407 journal article http://dx.doi.org/10.3897/phytokeys.185.70407 1314-2003-185-87 32B23F31E9B855D399001AADE61910EA 6. Rosulabryum densifolium (Brid.) Ochyra Remarks. A robust species distributed throughout the Neotropics, primarily along the mountain chains from Mexico south to Chile, and throughout the Andes ( Ochi 1980 ). It is common at higher elevations, often above 3000 m, but can also occur in the lowlands, and is found along streams and in wetland areas on wet soil or rock. The species is characterized by its dioicous sexual condition, long evenly foliate stems with large narrowly ovate leaves, a costa excurrent into a medium to long awn, strong limbidium, sharply serrate to denticulate distal leaf margins, with the teeth often double, and brown to red-brown rhizoidal tubers ( Ochi 1967 : 30, as Bryum densifolium ). Representative specimen examined. Bio Bio Region, Prov. Nuble , Renegado River at Aserradero bridge, 36°54'S 71°28'W , alt. ca. 1000 m, on muddy soil bank beside river, R.R. Ireland & G. Bellolio 30831 , 9 Dec 2002 (MO).