Knudsen, K., Kocourková, J., Nordin, A. & Sipman, H. J. M. 2015. Acarospora cinerascens (Acarosporaceae), a poorly known species from the southern Central Alps (Italy and Switzerland). — Herzogia 28: 690–696.
Acarospora cinerascens is accepted as distinct from A. versicolor based on larger spores and areoles as well as apothecia with a higher hymenium. Acarospora cinerascens is lectotypified. Acarospora alboatra is a synonym of A. cinerascens.