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Edibility
Inedible
Lookalike Danger
5 / 5
Habitat
🌲 Conifer, oak
Season
Jul – Sep
"Porcini's evil twin. One bite taints an entire stew. Taste-test before committing to the pan."
Mushroom ID is a rule-out game. Every entry below describes something that looks similar — learn the differences before eating.

Bitter bolete (Tylopilus felleus) has PINK pore surface (king bolete is WHITE → yellow-green), a dark NET on the stem (king has a FAINT white net), and an overwhelmingly BITTER taste — taste a dab before picking a bag.
This species is found with or partners with the following hosts. Ectomycorrhizal hosts (green border) form a root-level partnership; ericoid / arbutoid shrubs (purple border) share the same mycorrhizal networks.

Truffle / bolete / chanterelle host. Acorns edible after leaching.

Generic conifer habitat — pine, spruce, fir, hemlock, or Douglas-fir. Shown when the species is reported from conifers without a specific tree.
King-bolete look-alike with a tan-brown cap — but the pores turn PINK at maturity and the flesh is so bitter a single piece ruins a whole pan of boletes. Not toxic, just inedible.
Under conifers and hardwoods across eastern North America and Europe. Summer through fall.
Min Soil Temp
50°F
Moisture Need
rain 0.5in 7d
Drought Tolerance
moderate
Elevation Range
0–13,800 ft
Choice. Pores WHITE to yellowish-green at maturity, NOT pink.
Conifer, oak
Photograph it and log your observation on iNaturalist. The community can help confirm your ID — always get confirmation before eating.