Sidera lenis
Family Repetobasidiaceae · Updated October 2026
93US records
27states
Augbusiest month
93 US records since 1898 (1 in the last 10 years)
Last seen Sep 8, 2025 (about 14 months ago) near Anchorage, Anchorage Municipality, AK, a preserved specimen in INSDC Sequences. Most US records come from California, New York and Idaho, and the busiest months are Aug, Oct 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, Oct, Sep.
Where it's recorded
Top counties
- Siskiyou County, CA (11) · latest Jul 10, 1947
- Del Norte County, CA (7) · latest Oct 30, 1958
- Orange County, NC (7) · latest Oct 20, 1945
- Bonner County, ID (6) · latest Jun 18, 1948
- Warren County, NY (5) · latest Sep 10, 1942
- Clearwater County, MN (3) · latest Aug 18, 1970
- Worcester County, MA (3) · latest 1925-11
- Carroll County, NH (3) · latest May 21, 1936
- Latah County, ID (2) · latest Jul 22, 1948
- Sevier County, TN (2) · latest Jul 13, 2004
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.