Wrinkled Club
Clavulina rugosa · Family Hydnaceae · Updated October 2026
188US records
24states
Augbusiest month
188 US records since 1887 (97 in the last 10 years)
Last seen Aug 6, 2026 (about 3 months ago) near Thomas, Tucker County, WV, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from California, Oregon and North Carolina, and the busiest months are Aug, Jan and Sep. (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, Jan, Sep.
Where it's recorded
Top counties
- Tompkins County, NY (15) · latest Oct 12, 1907
- Marin County, CA (11) · latest Jan 11, 2026
- Macon County, NC (11) · latest Jul 26, 2021
- Lane County, OR (9) · latest Jan 20, 2022
- Chippewa County, MI (7) · latest 1917-09
- San Mateo County, CA (7) · latest Jan 20, 2026
- Multnomah County, OR (6) · latest Nov 8, 2025
- Sonoma County, CA (6) · latest Feb 15, 2026
- Clackamas County, OR (6) · latest Jan 15, 2026
- King County, WA (5) · latest Dec 18, 2024
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.