Name in North American Boletes: Fuscoboletinus glandulosus
- Genus 2: Fuscoboletinus
- Genus 3: Boletinus
Common Name: “Boreal Bolete”
Tells: Yellow, oft-pungent cap flesh reddens by bug holes & DNS. Very viscid stem is yellow w/red dots above the ring & dark red (aging toward blackish brown) below.
Other Information: Viscid, red-brown cap often has black spots or streaks when old. Grows with conifers, esp. balsam fir and hemlock.
Science Notes: DNA testing moved this mushroom from the now-eliminated genus Fuscoboletinus to Suillus. A northerly species.
- NH4OH (Ammonia): Cap skin turns red.
- KOH: Cap skin turns red.
- FeSO4 (Iron Salts): Cap skin turns bluish. Cap flesh turns olive and then olive-black.