Harris, R.C. (1984), Acta Amazonica (Suppl.) 14: 75 [comb. nov.]

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

nomenclatural synonym: Pseudopyrenula nitidiuscula (Nyl.) Müll.Arg. legitimate taxonomic synonym: Trypethelium infuscatulum Müll.Arg. legitimate misapplication: Trypethelium mastoideum (Ach.) Ach. legitimate misapplication: Bathelium mastoideum Ach. legitimate

• Comment: P.McCarthy records that Bathelium mastoideum Ach. has been misapplied to this taxon in Australia but does not cite any references in which this occurred.
• Comment: P.McCarthy records that Trypethelium mastoideum (Ach.) Ach. has been misapplied to this taxon in Australia but does not cite any references in which this occurred.
• Distribution: QLD, NSW, TAS, Extra-Aust.

P.McCarthy (Comp.) (2017), Checklist of the Lichens of Australia and its Island Territories: - [nomenclatural synonym]

nomenclatural synonym of: Astrothelium nitidiusculum (Nyl.) Aptroot & Lücking legitimate

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