Species details

Yellow swamp bolete

Suillus flavidus

Conditional / expert preparation
Yellow swamp bolete – Suillus flavidus

Photo: grzegorz_grzejszczak · CC BY-SA 4.0 · Photo source · License

Description

A small yellowish-grey slimy Suillus characteristic of boggy mountain soils and mycorrhiza with dwarf mountain pine.

Identification features

The cap is 3–6 cm wide, grey-yellowish, greasy to slimy, with peelable skin. Pores start yellow, later yellow-brown and relatively large. The stem is slender, brownish and has a slimy ring when young.

Identification checklist

Key is the combination of a yellowish slimy peelable cap, large yellow pores, a young slimy ring and bog habitat with dwarf mountain pine.

Detailed features

Cap
The cap is 3–6 cm wide, grey-yellowish, greasy to slimy, with peelable skin.
Hymenophore
Pores start yellow, later yellow-brown and relatively large.
Stem
The stem is slender, brownish and has a slimy ring when young.

Size

Cap diameter
3–6 cm

Habitat

Grows on boggy mountain ground, peatlands and wet moss in mycorrhiza with dwarf mountain pine or other low pines, in summer and autumn; rare.

Fruiting period

July, August, September, October

Ecology

Trophic mode
Mycorrhizal
Host trees
Pine (Pinus)
Soil
Moist
Notes
Grows on boggy mountain ground, peatlands and wet moss in mycorrhiza with dwarf mountain pine or other low pines, in summer and autumn; rare.

How to separate similar species

Other yellow Suillus grow with different pines or larch. The highly specific bog habitat is particularly important for this species.

Similar species

Conservation

Red list
V – vulnerable species
Notes
On the Slovenian Red List: V – vulnerable species.

Extended-description sources