Mock Oyster Mushroom
Phyllotopsis nidulans · Family Phyllotopsidaceae · Updated October 2026
1,474US records
44states
Octbusiest month
1,474 US records since 1888 (813 in the last 10 years)
Last seen Oct 4, 2026 (about 3 weeks ago) near Lima, Delaware 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, California and New York, and the busiest months are Oct, Jan and Nov. (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: Oct, Jan, Nov.
Where it's recorded
Top counties
- Tompkins County, NY (52) · latest Dec 10, 2025
- San Mateo County, CA (49) · latest Feb 19, 2026
- Sussex County, NJ (36) · latest Sep 28, 2019
- Mercer County, NJ (35) · latest Dec 31, 2022
- Ocean County, NJ (31) · latest Oct 26, 2019
- Sonoma County, CA (31) · latest Feb 27, 2026
- Burlington County, NJ (26) · latest Jan 12, 2025
- Morris County, NJ (26) · latest Nov 26, 2025
- Marin County, CA (24) · latest Dec 25, 2025
- Santa Clara County, CA (22) · latest Feb 18, 2026
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.