Cylindrobasidium corrugum
Family Physalacriaceae · Updated October 2026
108US records
8states
Julbusiest month
108 US records since 1903 (0 in the last 10 years)
Last seen 2012-06 () in Kittitas County, WA, a preserved specimen in University of British Columbia Herbarium (UBC) - Fungi Collection. Most US records come from Wyoming, Colorado and California, 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
| State | Records | Latest sighting |
|---|---|---|
| Wyoming | 31 | Jun 28, 1971 |
| Colorado | 22 | Jul 25, 1994 |
| California | 15 | Jul 4, 1968 |
| Idaho | 15 | Jun 25, 1976 |
| Washington | 12 | 2012-06 |
| Oregon | 10 | Sep 21, 1919 |
| Utah | 2 | Jun 12, 1970 |
| Arizona | 1 | Aug 18, 1973 |
Top counties
- Albany County, WY (20) · latest Jul 11, 1955
- Siskiyou County, CA (10) · latest Jul 4, 1968
- Teton County, WY (8) · latest Jun 28, 1971
- Boulder County, CO (8) · latest Nov 11, 1936
- Grant County, OR (6) · latest 1916-07
- Gilpin County, CO (5) · latest Sep 29, 1928
- Fremont County, ID (4) · latest Jul 12, 1957
- Teton County, ID (3) · latest Jul 29, 1920
- San Juan County, CO (3) · latest Jul 4, 1986
- Boise County, ID (3) · latest Aug 21, 1917
More on this species from GBIF.
Bring along
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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.