Name in North American Boletes: Boletus luridus
- Genus 2: Boletus
Tells: Yellow, blue-staining cap flesh has a red line just above the tubes. Cap stains green/blue. Yellow/red stem has lots of red netting, esp. at the top.
Other Information: Dark red pores age toward orange & quickly stain blue. Likes oak, but not exclusively. Distinguished from the other blue-staining, red-pored species by the prominent red netting.
Science Notes: DNA testing moved this mushroom from Boletus to a newly erected genus called “Suillellus”. The species name comes from Europe and will most likely get changed if DNA tests (as usual) show that the two continents have genetically distinct lookalikes rather than a single, panoceanic species.
Edibility: Avoid. A known sick-maker.
- NH4OH (Ammonia): No data.
- KOH: Cap surface turns dark red to blackish. Cap flesh turns orange-yellow after the natural blue stain has faded.
- FeSO4 (Iron Salts): No data.