| Name | Sphaerotheca euphorbiae (Castagne) E. S. Salmon |
| Authorship | (Castagne) E. S. Salmon |
| Rank | Species |
| Placed in | Sphaerotheca Léveillé |
| Citation | 1902 Bull. Torrey Bot. Club 29: 95 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Sphaerotheca euphorbiae (Castagne) E. S. Salmon |
| Identification made in | [no date] (2), 1984 (1) |