Kaibab Jack
Suillus kaibabensis · Family Suillaceae · Updated October 2026
82US records
5states
Augbusiest month
82 US records since 1971 (48 in the last 10 years)
Last seen Aug 16, 2026 (about 2 months ago) in Sitgreaves National Forest, AZ, photographed by an iNaturalist user, with the ID agreed on by other iNaturalist users (research grade). Most US records come from Arizona, Colorado and Utah, and the busiest months are Aug, Jul and Sep. (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: Aug, Jul, Sep.
Where it's recorded
| State | Records | Latest sighting |
|---|---|---|
| Arizona | 49 | Aug 16, 2026 |
| Colorado | 26 | Sep 19, 2025 |
| Utah | 3 | Jul 25, 2021 |
| New Mexico | 3 | Sep 27, 2025 |
| California | 1 | Sep 15, 2023 |
Top counties
- Coconino County, AZ (27) · latest Aug 16, 2026
- Greenlee County, AZ (10) · latest Jul 27, 1972
- Douglas County, CO (5) · latest Aug 14, 2014
- Cochise County, AZ (5) · latest Jul 22, 2026
- Grand County, CO (5) · latest Aug 13, 2021
- Apache County, AZ (5) · latest Aug 15, 2026
- Jefferson County, CO (4) · latest Jun 17, 2025
- El Paso County, CO (3) · latest Sep 19, 2025
- Summit County, UT (2) · latest Aug 24, 2019
- Sandoval County, NM (2) · latest Sep 21, 2025
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.