Reticulated Beard Truffle
Rhizopogon villosulus · Family Rhizopogonaceae · Updated October 2026
35US records
7states
Octbusiest month
35 US records since 1926 (4 in the last 10 years)
Last seen Oct 15, 2022 (about 4 years ago) near Falcon, Cumberland County, NC, a preserved specimen in EUKARYOME: the rRNA gene reference database for identification of eukaryotes. Most US records come from Oregon, California and Washington, and the busiest months are Oct, Nov 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: Oct, Nov, Aug.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Oregon | 16 | Oct 12, 2018 |
| California | 7 | Aug 7, 2016 |
| Washington | 7 | Oct 5, 2022 |
| Arizona | 2 | – |
| Utah | 1 | Sep 3, 2012 |
| North Carolina | 1 | Oct 15, 2022 |
| New Mexico | 1 | – |
Top counties
- Del Norte County, CA (4) · latest Nov 2, 1939
- Benton County, OR (4) · latest May 27, 1969
- Linn County, OR (3) · latest Oct 12, 2018
- Lane County, OR (3) · latest Oct 18, 1994
- Pima County, AZ (2)
- Washington County, OR (2) · latest Nov 16, 1963
- Clallam County, WA (2) · latest Oct 9, 1992
- Kane County, UT (1) · latest Sep 3, 2012
- Douglas County, OR (1) · latest Oct 23, 1937
- Cumberland County, NC (1) · latest Oct 15, 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.