Grube M. 2018: Staurospora, a new genus for a unique species with spherical ascospores in Arthoniaceae. – Herzogia 31: 695–699.
Staurospora, with S. purpurissata as the single species, is described as a new genus in the Arthoniaceae. The genus is distinct from all other members of the family by its peculiar ascospores.