Basionym:
Hysterium clavisporum Cooke & Peck, Bull. Buffalo Soc. Nat. Sci. 3 (1): 34 (1875) [MB#221534]
Obligate synonyms:
- Phaeosphaeria clavispora (Cooke & Peck) M.E. Barr, Bull. New York State Mus. 459: 15 (1986) [MB#128519]
- Chaetomastia clavispora (Cooke & Peck) M.E. Barr, Mycotaxon 34 (2): 509 (1989) [MB#135636]
- Dothidea clavispora (Cooke & Peck) Peck, Rep. (Annual) New York State Mus. Nat. Hist. 30: 76 (1878) [MB#156599]
- Rhopographus clavisporus (Cooke & Peck) Sacc., Syll. Fung. 2: 648 (1883) [MB#158080]
- Rhopographella clavispora (Cooke & Peck) Sacc., Syll. Fung. 24 (1): 622 (1926) [MB#230405]
- Calospora clavispora (Cooke & Peck) Theiss. & Syd., Ann. Mycol. 13 (3-4): 428 (1915) [MB#501850]