| Name | Lactarius trivialis var. gracilis Peck |
| Authorship | Peck |
| Rank | Variety |
| Placed in | Lactarius trivialis (Fries) Fries: Fries |
| Citation | 1885 Rep. (Annual) New York State Mus. Nat. Hist. 38: 120 |
| Holdings | 5 Specimens held in the Harvard University Herbaria identified as Lactarius trivialis var. gracilis Peck |
| Identification made in | [no date] (5) |