Rollrim Milkcap
Lactarius resimus · Family Russulaceae · Updated October 2026
99US records
20states
Augbusiest month
99 US records since 1896 (2 in the last 10 years)
Last seen Sep 2, 2021 (about 5 years ago) near Anchorage, Anchorage Municipality, AK, a preserved specimen in University of Washington Herbarium (WTU) - Macrofungi Collection. Most US records come from California, Alaska and Colorado, and the busiest months are Aug, Sep and Nov. (Data as of October 26, 2026; records can lag by weeks.)
⚠ Never eat a wild mushroom based on this site. We show where fungi have been recorded, nothing more. We never say any mushroom is edible or safe, and you shouldn't decide that from any website, app or photo. Many deadly mushrooms look like harmless ones. If someone may have eaten a wild mushroom, call Poison Control at 1-800-222-1222 right away.
Lookalike warning. Many mushrooms, including deadly ones, closely resemble each other, and the only reliable identification comes from an expert looking at the actual specimen (often with spore prints or microscopy). Never use a name, photo or record count on this page to decide what something is.
When it's recorded
Records by month, all years. Busiest: Aug, Sep, Nov.
Where it's recorded
Top counties
- Mendocino County, CA (15) · latest Nov 22, 1986
- Yuba County, CA (10) · latest Nov 28, 1989
- Anchorage Municipality, AK (8) · latest Sep 2, 2021
- Fairbanks North Star Borough, AK (7) · latest Sep 4, 2015
- Windham County, VT (5) · latest Aug 9, 1916
- Bonner County, ID (4) · latest Sep 25, 1976
- Marin County, CA (3) · latest Feb 13, 1996
- Summit County, CO (3) · latest Aug 27, 2011
- Boulder County, CO (3) · latest Aug 16, 1990
- Alameda County, CA (3) · latest Nov 26, 1934
More on this species from GBIF.
Bring along
🍄
Regional mushroom field guideSee on Amazon🍄
Folding mushroom knife with brushSee on Amazon🍄
Wicker foraging basketSee on Amazon🍄
10x hand lens / loupeSee on Amazon🍄
Spore print paperSee on AmazonAs an Amazon Associate we earn from qualifying purchases.