Basionym Name:Verrucaria eurysperma Stizenb., Ber. Tät. St Gall. naturw. Ges.: 210 (1891)
Homotypic synonyms:Porina eurysperma (Stizenb.) Zahlbr., [as 'euryspermum'] Cat. Lich. Univers. 1: 380 (1922)