Hoffm. (1796), Deutschlands Flora: 156 [tax. nov.]

Lettau (1912), Hedwigia 52: 254 [basionym]

basionym of: Physcia dubia (Hoffm.) Lettau legitimate

P.McCarthy (Comp.) (2016), Checklist of the Lichens of Australia and its Island Territories: - [secondary reference]

P.McCarthy (Comp.) (2016), Checklist of the Lichens of Australia and its Island Territories: - [nomenclatural synonym]

nomenclatural synonym of: Physcia dubia (Hoffm.) Lettau legitimate

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