Scleroderma hypogaeum
Family Sclerodermataceae · Updated October 2026
43US records
11states
Augbusiest month
43 US records since 1888 (1 in the last 10 years)
Last seen Aug 25, 2019 (about 7 years ago) near Seattle, King County, WA, a preserved specimen in University of Washington Herbarium (WTU) - Macrofungi Collection. Most US records come from Oregon, California and Washington, and the busiest months are Aug, Apr and Oct. (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, Apr, Oct.
Where it's recorded
Top counties
- Siskiyou County, CA (6) · latest Aug 30, 1990
- Lane County, OR (5) · latest Aug 7, 1968
- Ocean County, NJ (5) · latest 1888-04
- Benton County, OR (5) · latest Oct 12, 1939
- King County, WA (3) · latest Aug 25, 2019
- Spokane County, WA (3) · latest Sep 13, 1920
- Madera County, CA (2) · latest Aug 28, 1930
- Lee County, AL (1) · latest 1898
- Multnomah County, OR (1) · latest 1941-11
- Washington County, OR (1) · latest Jul 21, 1925
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.