| Name | Boletus rubellus subsp. fraternus (Peck) Singer |
| Authorship | (Peck) Singer |
| Rank | Subspecies |
| Placed in | Boletus rubellus Krombholz |
| GUID | urn:lsid:indexfungorum.org:names:346004 |
| Citation | 1947 Amer. Midl. Naturalist 37: 47 |
| Holdings | 4 Specimens held in the Harvard University Herbaria identified as Boletus rubellus subsp. fraternus (Peck) Singer |
| Identification made in | [no date] (4) |