Barometer Earthstar
Astraeus hygrometricus · Family Diplocystidiaceae · Updated October 2026
1,154US records
43states
Augbusiest month
1,154 US records since 1827 (191 in the last 10 years)
Last seen Apr 15, 2026 (about 6 months ago) near Blue Diamond, Clark County, NV, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New Jersey, California and Florida, and the busiest months are Aug, Oct and Jul. (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, Jul.
Where it's recorded
Top counties
- Ocean County, NJ (38) · latest Oct 26, 2019
- Mercer County, NJ (37) · latest May 4, 2019
- Sussex County, NJ (36) · latest Sep 28, 2019
- Alameda County, CA (25) · latest Dec 22, 2025
- Morris County, NJ (22) · latest Jul 20, 2019
- Burlington County, NJ (21) · latest Mar 3, 2024
- Santa Barbara County, CA (17) · latest Nov 21, 2025
- Hunterdon County, NJ (16) · latest Aug 25, 2019
- Bucks County, PA (14) · latest 2019
- Suffolk County, NY (14) · latest Aug 4, 2022
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.