Botryobasidium pruinatum
Family Botryobasidiaceae · Updated October 2026
85US records
20states
Julbusiest month
85 US records since 1880 (0 in the last 10 years)
Last seen Jun 20, 1986 (about 40 years ago) in Haywood County, NC, a preserved specimen in University of Tennessee Fungal Herbarium. Most US records come from Iowa, New York and Oregon, and the busiest months are Jul, Jun and Aug. (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, Aug.
Where it's recorded
Top counties
- Johnson County, IA (17) · latest May 25, 1952
- Blount County, TN (5) · latest Jul 21, 1963
- Josephine County, OR (4) · latest Jun 25, 1958
- Adams County, PA (4) · latest Jul 26, 1932
- Onondaga County, NY (3) · latest Aug 26, 1935
- Columbia County, NY (3) · latest Sep 27, 1952
- Tompkins County, NY (3) · latest Sep 4, 1952
- Brown County, IN (3) · latest Aug 23, 1958
- Albany County, NY (3) · latest Oct 21, 1952
- Benton County, OR (3) · latest Jul 15, 1958
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.