Hairy-Stalked Collybia
Gymnopus spongiosus · Family Omphalotaceae · Updated October 2026
510US records
27states
Sepbusiest month
510 US records since 1876 (148 in the last 10 years)
Last seen Aug 1, 2026 (about 3 months ago) near Blue Ridge Summit, Franklin County, PA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from New Jersey, Kansas and Pennsylvania, and the busiest months are Sep, Aug and Oct. (Data as of October 26, 2026; records can lag by weeks.)
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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: Sep, Aug, Oct.
Where it's recorded
Top counties
- Riley County, KS (39) · latest Sep 12, 2022
- Sussex County, NJ (36) · latest Sep 28, 2019
- Ocean County, NJ (30) · latest Oct 26, 2019
- Mercer County, NJ (23) · latest May 4, 2019
- Morris County, NJ (23) · latest Jul 20, 2019
- Gloucester County, NJ (21) · latest Sep 15, 2019
- Cook County, IL (20) · latest Sep 21, 2009
- Burlington County, NJ (19) · latest Oct 6, 2018
- Porter County, IN (17) · latest Aug 23, 2008
- Hunterdon County, NJ (15) · latest Aug 25, 2019
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.