| Name | Agaricus holoporphyrus Berkeley & M. A. Curtis |
| Authorship | Berkeley & M. A. Curtis |
| Rank | Species |
| NomenclaturalStatus | NomLeg |
| Placed in | Agaricus |
| Citation | 1868 J. Linn. Soc., Bot. 10(no. 45): 284 |
| Holdings | 3 Specimens held in the Harvard University Herbaria identified as Agaricus holoporphyrus Berkeley & M. A. Curtis |
| Identification made in | [no date] (3) |