Protolog: Muhr,LE/Tønsberg,T, Nordic Journal of Botany8(6): 649 (1989)
Locality: SWEDEN, VÄSTERBOTTEN: Skellefteå par., c. 3 km NE of Mt Stora Blåbergsliden, by the small stream Djupgrovbäcken, 1984.08.08, Muhr, L.-E. 7540 [65°40'N, 20°21'E]
Currently accepted name:Rimularia fuscosora Muhr & Tønsberg