Sphaerobasidium minutum
Family Hydnodontaceae · Updated October 2026
56US records
5states
Julbusiest month
56 US records since 1937 (0 in the last 10 years)
Last seen Oct 8, 2015 (about 11 years ago) near Princeton, Worcester County, MA, a preserved specimen in Aphyllophorales externi. Most US records come from Oregon, Wisconsin and Washington, and the busiest months are Jul, Jun and Oct. (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: Jul, Jun, Oct.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Oregon | 43 | Jul 23, 1958 |
| Wisconsin | 9 | Jul 16, 1964 |
| Washington | 2 | Oct 8, 2014 |
| Arizona | 1 | Sep 21, 1986 |
| Massachusetts | 1 | Oct 8, 2015 |
Top counties
- Josephine County, OR (19) · latest Jul 20, 1958
- Vilas County, WI (9) · latest Jul 16, 1964
- Wallowa County, OR (8) · latest Jul 23, 1958
- Douglas County, OR (3) · latest Jul 23, 1958
- Jackson County, OR (3) · latest Jul 17, 1958
- Deschutes County, OR (3) · latest Jul 16, 1958
- Tillamook County, OR (2) · latest Jul 16, 1958
- Benton County, OR (2) · latest Jul 15, 1958
- Linn County, OR (2) · latest Jul 16, 1958
- Pima County, AZ (1) · latest Sep 21, 1986
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.