Yellow-Stemmed Micropore
Microporus xanthopus · Family Polyporaceae · Updated October 2026
45US records
4states
Octbusiest month
45 US records since 1881 (31 in the last 10 years)
Last seen Oct 8, 2019 (about 7 years ago) near Urban Honolulu, Honolulu County, HI, a preserved specimen in Global Spore Sampling Project: a global, standardized dataset of airborne fungal DNA. Most US records come from Hawaii, Florida and South Carolina, and the busiest months are Oct, Feb and May. (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, Feb, May.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Hawaii | 31 | Oct 8, 2019 |
| Florida | 6 | Dec 5, 1938 |
| South Carolina | 4 | 1881 |
| New Jersey | 4 | – |
Top counties
- Honolulu County, HI (31) · latest Oct 8, 2019
- Mercer County, NJ (4)
- Hernando County, FL (3) · latest 1922-02
- Lexington County, SC (2) · latest 1881
- Alachua County, FL (2) · latest Dec 5, 1938
- Richland County, SC (1)
- St. Johns County, FL (1)
- Charleston County, SC (1)
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.