Basionym Name:Verrucaria approximans Kremp., Vidensk. Meddel. Dansk Naturhist. Foren. Kjøbenhavn 5: 396, tab. I, fig. 3 (1874)
Homotypic synonyms:Pyrenula approximans (Kremp.) Müll. Arg., Flora, Regensburg 68: 335 (1885)