Bitter Bolete (Tylopilus Felleus) Identification

Bitter Bolete / Summer / Autumn / In-Edible


The bitter bolete is sometimes confused with the porcini mushroom, it’s edible but is very very bitter in flavour and is best avoided.

Scientific Name

Tylopilus Felleus

Common Names

Bitter Bolete




In any type of woodland but most often found in and around deciduous trees particularly Beech and Oak.


A non-toxic member of the Bolete family, but one to avoid as they are incredibly bitter and will ruin any meal you include them in.

Foraging Video for the Bitter Bolete


Identifying Features of the Bitter Bolete:


Brown to tan in colour they are convex when young but they tend to flatten out with age.

Charles Sommer, Public domain, via Wikimedia Commons


Slightly lighter in colour than the cap, they tend to be more bulbous towards the base, the stem is covered in a net like pattern that is darker than the stem itself.

Puchatech K., CC BY-SA 3.0 <>, via Wikimedia Commons


Pores rather than gills, they are white when young but become pinkish with age. The pores will bruise pinkish and go brown when very mature.

Jerzy Opioła, CC BY-SA 4.0 <>, via Wikimedia Commons


Mushroomy, but some have said the smell is unpleasant.


Light pink to brown.


In food

Technically edible but they are extremely bitter and are best avoided.

Tylopilus_felleus_060914c.jpg: bernd gliwaderivative work: Ak ccm, CC BY-SA 2.5 <>, via Wikimedia Commons

Potential lookalikes

Other members of the Bolete family.

They look very similar to the Penny Bun (Boletus Edulis). The dark-on-light reticulation in the stalk is distinctive and is the opposite of that on the stalk of the Penny Bun (Boletus Edulis).

Extra Notes

This mushroom has been the subject of research into bioactive compounds that have been tested for anti-tumour and antibiotic properties.

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