Calvatia cretacea
Family Lycoperdaceae · Updated October 2026
49US records
4states
Augbusiest month
49 US records since 1931 (1 in the last 10 years)
Last seen Aug 27, 2022 (about 4 years ago) near Silver Plume, Clear Creek County, CO, a preserved specimen in Denver Botanic Gardens, Sam Mitchel Herbarium of Fungi. Most US records come from Alaska, Colorado and California, and the busiest months are Aug, Jul and Apr. (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, Jul, Apr.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Alaska | 28 | Aug 1, 2001 |
| Colorado | 16 | Aug 27, 2022 |
| California | 4 | Aug 4, 1949 |
| District of Columbia | 1 | – |
Top counties
- North Slope Borough, AK (16) · latest Aug 1, 2001
- Clear Creek County, CO (13) · latest Aug 27, 2022
- Denali Borough, AK (7) · latest Aug 14, 1992
- Northwest Arctic Borough, AK (3) · latest Aug 12, 1976
- Butte County, CA (2) · latest May 4, 1940
- Tulare County, CA (2) · latest Aug 4, 1949
- Gilpin County, CO (2) · latest Aug 24, 2004
- Yukon-Koyukuk Census Area, AK (1) · latest 1931-08
- Skagway Municipality, AK (1) · latest 1931-08
- District of Columbia, DC (1)
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.