Birch mushroom confusion: are there poisonous doubles?

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confuse birch mushroom

With a bit of luck you can find tasty birch mushrooms near Birken between the end of June and October. Is there a risk of confusing birch mushrooms with poisonous doubles?

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In a nutshell

  • Birch mushrooms always near birches
  • colored differently depending on location
  • resemble other rough-legged boletes
  • no risk of confusion with toadstools

Table of contents

  • Identify birch fungus
  • Is there a risk of confusion?
  • frequently asked Questions

Identify birch fungus

The mean birch mushroom (Leccinum scabrum) is one of the early species, because already at the end of June you can track it down in sparse forests as well as in gardens and parks. He always grows near birches. How to recognize birch mushrooms and avoid confusion:

Birch fungus (Leccinum scabrum)
cap stalk Meat
- 5 to 15 centimeters (cm) in diameter
– hemispherical
– light or dark grey, grey-brown, partly reddish-grey colored
- smooth surface
– greasy in damp weather
– Tubes easily detachable from the hat flesh
– 8 to 15 cm long
– about 2 cm thick
- white
– Covered with small black scales
- full
– tapered towards the top
– first white, later grey
– Cap flesh of young specimens firm
– Smell pleasant
– Flesh of older birch mushrooms soft and spongy
– stem meat fibrous, woody

A notice: Collect only the young birch mushrooms. Older specimens are no longer as tasty.

Is there a risk of confusion?

The common birch mushroom can easily be confused with other rough-legs. There is no danger because all rough feet are edible. So there are no toxic doubles. Nevertheless, there is a "threat" of confusing the birch mushroom with these mushrooms:

A notice: Under no circumstances should you eat mushrooms raw. Even good edible mushrooms are often poisonous when not cooked. The birch mushroom and other boletus are also inedible raw. They must be braised for at least 15 minutes before consumption.

1. Poplar Roughfoot (Leccinum duriusculum)

The rare poplar boletus appears much later than the birch mushroom. It can only be found near trembling poplars.

Poplar Roughfoot (Leccinum duriusculum)
Happen characteristics Value
Parks, gardens, under hedges and bushes wrinkled brown hat surface
Stem with brown scales
good edible mushroom

2. Hornbeam Roughfoot (Leccinellum pseudoscabrum)

Hornbeam Roughfoot is a valuable mycorrhizal fungus. He lives in symbiosis with the hornbeam.

Hornbeam Roughfoot (Leccinellum pseudoscabrum)
Source: George Chernilevsky, Leccinum pseudoscabrum 2020 G1, Edited from Plantopedia, CC0 1.0
Happen characteristics Value
Garden, parks, beech forests wrinkled caramel colored hat
gray to olive-grey tubes
After cutting, the meat first turns grey-violet, then black
excellent edible mushroom

A notice: The hornbeam roughneck is a nature reserve and may only be collected in small quantities for personal use.

3. Birch Red Cap (Leccinum versipelle)

The birch red cap grows especially near silver birches. When it is humid and warm early in summer, mass occurrences are possible. Usually, however, the birch red cap is quite rare.

Birch Red Cap (Leccinum versipelle)
Happen characteristics Value
on acidic soils
near birches
reddish-brown colored cap
black mottled stem
turns black when cut
good edible mushroom
rarely maggot

4. Blue-footed roughneck (Leccinum cyaneobasileucum)

Also known as Woolly Roughfoot, the fungus grows near birch trees. Its flesh turns dark brown when cut.

Blue-footed roughneck (Leccinum cyaneobasileucum)
Source: Holger Krisp, Blue-footed roughneck Leccinum cyaneobasileucum, Edited from Plantopedia, CC BY 3.0
Happen characteristics Value
on moist to humus rich soil greyish hat with rolled brim
Stem with a woolly surface
edible mushroom

5. Cigar Roughfoot (Leccinum roseofractum)

Extremely rare is the cigar brown rough-leg, also known as the pink birch fungus. Its flesh takes on a striking coral red color when cut.

Happen characteristics Value
near birches dark gray to tobacco brown cap
yellowish stem with black scales
edible
avoid older copies

frequently asked Questions

How can birch mushrooms be processed?

The birch mushroom can be boiled or stewed. Birch mushrooms smell pleasant, they taste mild and slightly sour. Use young specimens if possible. The older the birch mushroom is, the slimier its consistency becomes when heated. Those who do not like this can dry the birch mushroom perfectly. The stalks of older birch mushrooms should not be processed, they are very woody.

What does the term "mycorrhizal fungi" mean?

The term "mycorrhiza" comes from the Greek and means something like "fungus root". The mycorrhiza is a root colonized by a fungus. The fungus envelops the young roots of a tree with its fine mycelium and creates a connection. While the tree gives off sugar as a product of its photosynthesis to the fungus, the latter supplies the tree with important nutrients such as nitrogen or phosphorus. Both benefit from this community.

Do other types of fungus also grow in symbiosis with birches?

Birch trees always form mycorrhizae, they live in symbiosis with numerous types of fungi. The most popular partners include all boletus mushrooms, toadstools, russula, veil mushrooms and knightlings.

Is it possible to grow birch mushrooms in the garden?

Hardly possible. Growing mushrooms in your own garden is becoming increasingly popular, but growing forest mushrooms is very complicated. Mushrooms and oyster mushrooms, for example, are more suitable for self-cultivation. You can get the right mushroom spawn from specialist retailers.

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