| Name | Agaricus subfloccosus (J. E. Lange) Hlavacek |
| Authorship | (J. E. Lange) Hlavacek |
| Rank | Species |
| Placed in | Agaricus |
| Citation | 1951 Mykol. Sborn. 28(4-6): 67 |
| Holdings | 2 Specimens held in the Harvard University Herbaria identified as Agaricus subfloccosus (J. E. Lange) Hlavacek |
| Identification made in | [no date] (2) |