Basionym Name:Sphaeria expers Schwein., Trans. Am. phil. Soc., New Series 4(2): 203 (1832)
Homotypic synonyms:Calosphaeria expers (Schwein.) Starbäck, Bih. K. svenska VetenskAkad. Handl., Afd. 3 19(no. 2): 13 (1894)Engizostoma expers (Schwein.) Kuntze, Revis. gen. pl. (Leipzig) 3(3): 474 (1898)Valsa expers (Schwein.) Cooke, Grevillea 13(no. 66): 39 (1884)