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Oak Bolete

Oak Bolete

Butyriboletus appendiculatus

Photo: František ŠARŽÍK

Habitat

Woodland

This species occurs on soil in deciduous woodlands, typically growing solitary or in small groups. It is almost exclusively associated with broad-leaved trees, particularly oak. It is commonly found in southern regions across Europe and into North America, preferring basic soil environments.

Photos

Appearance

Cap
Measuring 8 to 16 cm across, the cap is ochre or light yellow-brown with rusty or bay-colored flushes. Initially hemispherical and velvety, it becomes convex and smoother with age, often developing irregular cracks near the center.
Stem
6 to 15 cm long and stout, tapering toward a rooting base. It is lemon-yellow at the top and darker toward the bottom with reddish-brown patches, covered in a fine yellow or cream-colored network.
Flesh
Firm and pale yellow to intense yellow, sometimes fading. It turns slightly blue when cut near the top of the stem and may show reddish spotting or ochre-rust tones at the base.
Tubes
Lemon-yellow and adnate, turning greenish-blue or blue when cut or bruised.
Pores
Very small and angular, colored lemon-yellow when young, becoming slightly rusty or reddish and expanding with age.
Spore print
Olive-green to walnut-brown.

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Edibility

Edible with cautionTaste: Excellent ★★★★★

This mushroom has a mild, pleasant, and slightly earthy flavor with a smell reminiscent of puffballs. Some individuals may experience an allergic reaction to this species. It is very similar to the rare Butyriboletus subappendiculatus, which is found under conifers rather than broad-leaved trees.

Misidentification can be fatal. Never eat a mushroom unless you're 100% sure. This information may be inaccurate. Always consult multiple sources.

Nutrient Source

Ectomycorrhizal

This fungus forms a mutually beneficial relationship with trees, exchanging nutrients with their roots.

Common Names

Basque
onddo hankazorrotz
Danish
Tenstokket rørhat
Dutch
Geelnetboleet
English
Oak Bolete
Finnish
keltajalkatatti
French
Bolet appendiculé
German
Gelber Bronzeröhrling
Swedish
bronssopp
Ukrainian
Яєшник укорінений
Welsh
Cap Tyllog Derw

Synonyms

  • Boletus appendiculatus
  • Boletus appendiculatus
  • Boletus appendiculatusOak Bolete
  • Boletus irideus
  • Dictyopus appendiculatus
  • Suillus appendiculatus
  • Tubiporus appendiculatus