Knudsen, Kerry, et al. “A Study of Acarospora Nitrophila, a Rare and Misunderstood Lichen Species, and the Sister Species A. Praeruptorum (Acarosporales, Lecanoromycetes)”. Folia Cryptogamica Estonica, vol. 63, Apr. 2026, pp. 25–36, doi:10.12697/fce.2026.63.03.