Name in North American Boletes: Boletus roseopurpureus
- Genus 2: Boletus
Tells: All yellow except the pink/purple cap. Yellow flesh blues quickly (fading to slate), smells fragrant, & tastes of sour lemon.
Other Information: Yellow pores darken w/age & stain dark greenish-blue, soon fading to a lighter shade. Strongly netted yellow stem instantly stains dark blue (and can be reddish by the base). Particularly likes red oak.
Science Notes: DNA testing moved this mushroom from Boletus to a newly erected genus called “Butyriboletus” (“butyri” being latin for “butter” and this being one of the Butter Boletes).
- NH4OH (Ammonia): Cap skin turns dingy yellow to dull orange. Cap flesh and stem skin both turn dull orange.
- KOH: Cap skin, cap flesh, and stem skin all turn dull orange.
- FeSO4 (Iron Salts): No data.