Homotypic synonyms: Polyblastia fuscoargillacea f. obscurata(Vain.) Dombr., Konspekt Flor. Lishainikov Murmanskoioblasti i Severo-Vostochnol Finlyandii [Classification of Lichens found in the Murmansk province of the USSR and North-Eastern Finland], Leningrad: 13 (1970)
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