Name requested: Monotospora sphaerophoraMycologia 52 (2): 355. Mycological Papers 78: 2.
Homotypic synonym: Tretopileus sphaerophorusMycologia 52 (2): 355. Mycological Papers 78: 2.
Heterotypic synonym: Tretopileus opuntiaeMycological Papers 78: 2.