Biblthca Lichenol. 74: 165 (2000).

Basionym: Lecidea aggrediens Stirt., Proc. Roy. Philos. Soc. Glasgow 11: 313 (1879).

Type locality: India, Tamil Nadu, Nilgiris District, Nilgiri Mountains ("Neilgherries"), before 1879, Watt (BM - holotype).