Species details

Birch bolete

Leccinum scabrum

Traditionally edible
Birch bolete – Leccinum scabrum

Photo: Dick Culbert · CC BY 2.0 · Photo source · License

Description

A grey-brown bolete with a whitish stem covered in dark rough scales, usually with birch.

Identification features

The pores are pale at first and the stem is not netted. Old specimens become soft; Leccinum identification requires checking the host tree and colour changes.

Identification checklist

Check the entire fruitbody for identification. A grey-brown bolete with a whitish stem covered in dark rough scales, usually with birch. The pores are pale at first and the stem is not netted. Old specimens become soft; Leccinum identification requires checking the host tree and colour changes. Typical habitat: Mycorrhizal with birch in woodland, parks, bogs, and other birch habitats.

Detailed features

Cap
5–10 cm, grey-brown to brown, dry, initially somewhat velvety and later smoother.
Hymenophore
Tubes and pores are white when young, later greyish; they do not usually bruise blue.
Stem
8–15 × 1–2 cm, whitish, long and cylindrical, densely covered with brown to black rough scabers.
Flesh
Whitish to greyish; may become faintly pink-grey when cut but characteristically does not blue.
Smell
Mild mushroom-like smell.
Spore print
Tobacco to olive-brown.

Size

Cap diameter
5–10 cm
Stem height
8–15 cm
Stem diameter
1–2 cm

Habitat

Mycorrhizal with birch in woodland, parks, bogs, and other birch habitats.

Fruiting period

June, July, August, September, October, November

Ecology

Trophic mode
Mycorrhizal
Host trees
Birch (Betula)
Substrate
Forest soil
Notes
Mycorrhizal essentially with birch, in woodland, parks, bogs and other habitats where birch occurs.

Distribution

Notes
Widespread in Europe with birch and often common in suitable habitats.

How to separate similar species

Compare especially with these similar species: Leccinum variicolor, Leccinum holopus. Check the combination of cap shape and colour, spore-bearing surface, stem, flesh changes and habitat. A single feature or photograph is not enough; if the key characters do not match the description, do not treat the identification as confirmed.

Similar species

  • Leccinum variicolor

    Mottled bolete usually has a more patchily coloured cap and can show stronger blue-green staining near the stem base.

Interesting facts

Did you know? The rough dark scabers on the pale stem are a characteristic feature of the genus Leccinum.

Extended-description sources