Basionym Name:Septoria irregularis Peck, [as 'irregulare'] Bot. Gaz. 5(3): 34 (1880)
Homotypic synonyms:Phloeospora irregularis (Peck) Bubák, Hedwigia 58: 30 (1916)Rhabdospora irregularis (Peck) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 511 (1898)