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Bitter Bolete

Inedible Inedible
Autumn Autumn
Summer Summer

Can cause excitement when first found due to thinking you have found a Penny Bun and although this mushroom is technically edible if it is mistakenly added to a meal it will ruin it and render it too bitter for consumption.

Mushroom Type
Common Names Bitter Bolete
Scientific Name Boletus / Tylopilus felleus
Synonyms Boletus felleus
Season Start Jul
Season End Oct
Average Mushroom height (CM) 8
Average Cap width (CM) 10
Please note that each and every mushroom you come across may vary in appearance to these photos.


Pale to dark brown. Starting convex with a suede like covering but flattening out, losing any small hairs and sometimes splitting with age.


Starts with white, sponge like pores that develop a pink tinge around the pore openings and will bruise pink when damaged eventually turning brown.


Off white to tan with a darker net like pattern or reticulation, particularly towards the top of the stem. The base is usually wider than the top.


White and unchanging sometimes with a pink flush.


Mixed woodland, more often with broadleaf trees but will grow with coniferous trees.

Possible Confusion

Can look very like a Penny Bun, pictured, or Summer Bolete but the reticulation on the stem is dark on a lighter background for the Bitter Bolete and light on a slightly darker background for the Penny Bun and Summer Bolete and the pores of the Penny Bun and Summer Bolete do not bruise to a pink colour like the Bitter Bolete.

Taste / Smell

Extremely bitter.


Clay-pink to wine coloured. Subfusiform.

Other Facts

Felleus roughly translates as bile which is a good description of this mushrooms bitterness.


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