Otto, G 1983: Tholurna dissimilis well established in western North America. - The Bryologist86: 263-265. [RLL List # 119-101 / Rec.# 14052] Keywords: BRITISH COLUMBIA/ CANADA/ WASHINGTON/ OREGON/ THOLURNA/ DISTRIBUTION
Abstract: [This taxon is now known from 47 localities in the Pacific Northwest from 150 m above sea level to timberline.]