Name in North American Boletes: Boletus haematinus
Tells: Blue-bruising red pores (yellow on babies) age to reddish-brown. Yellow cap flesh stains blue. Red netting on thick yellow stem, esp. at the top.
Other Information: Yellow- to dark brown, oft-wavy cap may tint red, esp. by the edge, & often cracks w/age. Grows under mountain conifers, especially red fir. Found to date only in California and Idaho.
Science Notes: DNA testing moved this mushroom into the newly erected genus “Rubroboletus.” NOTE: This is the “Bad News Boletes” genus that includes many of the worst sick-makers. Red flags should go off when you see it.
Edibility: Avoid. Technically it is “Unknown,” but with red-pored blue-stainers caution takes the better part of valor.
- NH4OH (Ammonia): No data.
- KOH: No data.
- FeSO4 (Iron Salts): No data.