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Grey larch bolete

Suillus viscidus (L.) Roussel · Suillaceae

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Identification in 5 steps

The grey larch bolete has a grey-greenish to brown-yellowish, slimy cap of about 4 to 12 cm, grey to grey-white tubes with wide, angular pores and a thin white ring that turns grey-brown. It grows only with larches, preferring chalk-rich soils, from the alpine to the subalpine zone.

SeasonJuly to October
Spore printtobacco-brown
FamilySuillaceae
  1. Cap. The cap measures about 4 to 12 cm, is grey-greenish to brown-yellowish and slimy.
  2. Underside. The tubes are grey-white to grey, and the pores are wide and angular.
  3. Stem, ring and volva. The stem bears a thin white ring, which later turns grey-brown. There is no volva.
  4. Smell and taste. The smell is inconspicuous, and the taste is mild.
  5. Flesh and colour change. The flesh is pale yellowish.

Lookalikes

The grey larch bolete is an edible slippery bolete that grows only with larches. It is considered a mediocre edible mushroom and is suitable as a mixed mushroom. It is similar to the larch bolete, which is also edible.

Suillus bresadolae

edible

It has a chestnut-brown cap and yellow flesh, while the grey larch bolete has a grey cap. Also with larches and edible.

Side by side

Grey larch boleteLarch boleteSuillus bresadolae
Cap4 to 12 cm, grey-greenish to brown-yellowish, slimyyellow to orange-yellow, slimychestnut-brown, slimy
Undersidegrey to grey-white tubes, wide poresyellow, angular poresyellowish tubes
Stemwith a thin, white, later grey-brown ringwith a membranous ringwith yellow flesh
Fleshsoft, slimysoft, slimysoft, slimy
EdibilityEdibleedibleedible

Habitat & Season

Larch woods, preferring chalk-rich soils. Alpine to subalpine.

Host trees

Larch, mycorrhizal fungus.

Season

possible good main season

Rough estimate; the fruiting period depends on the weather.

Mushroom regions with a daily forecast

There are no records per region for this species yet. The country pages lead to all regions with a daily forecast.

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Chance near you

How good are the chances of finding this species where you are right now? We calculate it from weather, soil moisture, altitude and forest at your location.

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Safety

Never eat a mushroom you have not identified with certainty. Only eat mushrooms you have identified beyond doubt, and always cook them thoroughly.

Advice for your country

United Kingdom

Poison centre:

NHS 111 (England)111

Emergency: 999 · 112

Ireland

Poison centre:

National Poisons Information Centre (public line)(01) 809 2166

Emergency: 112 · 999

Germany

Poison centre:

Giftnotruf Berlin030 19240Giftinformationszentrum München089 19240GIZ-Nord Göttingen0551 19240

Emergency: 112

Mushroom advice: DGfM: find a mushroom expert. Certified mushroom experts of the German Mycological Society (DGfM).

Collecting rules: Mushrooms that are not specially protected may be collected in small quantities for personal use unless a protected area or ban applies. Certain specially protected edible species (e.g. cep, chanterelle, birch bolete) may be collected in small quantities for personal use.

Austria

Poison centre:

Vergiftungsinformationszentrale (VIZ)01 406 43 43

Emergency: 112 · 144

Mushroom advice: Austrian Mycological Society (ÖMG): mushroom advice. Mushroom advice by the Austrian Mycological Society or regional services such as municipal market offices.

Collecting rules: At most 2 kg of mushrooms per person per day unless the forest owner has prohibited collecting; organised collecting events are prohibited. Additional state rules apply (collecting hours, closed seasons), e.g. Carinthia, Tyrol, Vorarlberg, Salzburg.

Conservation and collecting rules

Not specially protected.

In the kitchen

Peel off the cap skin, cut into slices and fry or braise. Use it as a mixed mushroom. Cook for at least 15 minutes.

No reliable information on drying. Peel off the slimy cap skin, as it can cause stomach upset. Indigestible raw, always cook it well.

Frequently asked questions

Is the grey larch bolete edible?

Yes, it is considered edible, but only as a mediocre edible mushroom. It is suitable as a mixed mushroom and must be cooked thoroughly.

Where does it grow?

Only with larches, preferring chalk-rich soils, from the alpine to the subalpine zone, from July to October.

How do I tell it from the larch bolete?

The grey larch bolete has a grey cap and grey tubes; the larch bolete has a yellow to orange-yellow cap and yellow tubes.

Related species

Mushroom trainer: test yourself

Sources

Photo credits

No substitute for having your finds checked in person. No guarantee of accuracy. Updated: 17.10.2026.

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