Basionym Name:Verrucaria subtrahens Nyl., Flora, Regensburg 49(9): 135 (1866)
Homotypic synonyms:Pyrenula subtrahens (Nyl.) Müll. Arg., Bot. Jb. 6: 410 (1885)Pyrenula subtrahens var. subtrahens (Nyl.) Müll. Arg., Bot. Jb. 6: 410 (1885)