Oak Polypore
Buglossoporus quercinus · Family Fomitopsidaceae · Updated October 2026
33US records
6states
Julbusiest month
33 US records since 2013 (26 in the last 10 years)
Last seen Jul 10, 2026 (about 4 months ago) near Elizabethville, Dauphin County, PA, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Virginia, Pennsylvania and Maryland, and the busiest months are Jul, Jun and Aug. (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: Jul, Jun, Aug.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Virginia | 13 | Jun 19, 2026 |
| Pennsylvania | 9 | Jul 10, 2026 |
| Maryland | 6 | Jul 6, 2025 |
| New Jersey | 2 | Aug 1, 2023 |
| Delaware | 2 | Jul 12, 2024 |
| North Carolina | 1 | Jul 9, 2024 |
Top counties
- Montgomery County, PA (4) · latest Jun 21, 2026
- Montgomery County, MD (4) · latest Jul 6, 2025
- Fairfax County, VA (3) · latest Aug 2, 2023
- Warren County, VA (3) · latest Jul 9, 2016
- Berks County, PA (2) · latest Jun 27, 2020
- Norton city, VA (2) · latest Jun 14, 2024
- Frederick County, MD (2) · latest Jul 12, 2014
- Page County, VA (2) · latest Jun 19, 2026
- Fauquier County, VA (2) · latest Jul 5, 2014
- Morris County, NJ (1) · latest Jul 5, 2020
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.