Notes on the genus Polycoccum (Ascomycota, Dacampiaceae) in Spain, with a key to the species

Atienza, V., Calatayud, V., Hawksworth, D.L. 2003. Notes on the genus Polycoccum (Ascomycota, Dacampiaceae) in Spain, with a key to the species. LICHENOLOGIST, 35:125-135.