Habitat
This mushroom is found on soil in deciduous woodlands, open woods, and parkland. It grows in scattered small groups associated with broad-leaved trees, particularly beech and oak (including cork oak).
Photos
Appearance
- Cap
- Large, 5 to 30 centimeters wide, ranging from dark cigar-brown or sepia to dark brick-red near the edges; initially finely downy but becoming smooth and textured with tiny surface cracks.
- Stem
- Robust and stout, often swollen or bulbous; covered in a distinct network of brown, pinkish-buff, or rusty veins that extend down the majority of the length.
- Tubes
- White to cream at first, maturing to sulfur-yellow or slightly olive-green; depressed around the stem.
- Pores
- Small and round; starting white and matching the tube color, but becoming flushed with rust, red-brown, or slightly vinaceous when handled or with age.
- Flesh
- Firm and white, either remaining unchanging or darkening slightly towards a vinaceous or brownish tint when cut.
- Spore print
- Olive-brown to olivaceous walnut-brown.
Sporecast is better in the app
Plan ahead with 10-day forecasts, see what people are finding nearby, get photo IDs, and track your finds.
Edibility
This species is noted for its pleasant, earthy, or nutty aroma and delicious flavor. It is physically similar to the Penny Bun (Boletus edulis) but is distinguished by a darker appearance and a more prominently networked stem. While the white flesh typically remains unchanging, it may occasionally turn slightly vinaceous or darken when cut or bruised.
Misidentification can be fatal. Never eat a mushroom unless you're 100% sure. This information may be inaccurate. Always consult multiple sources.
Nutrient Source
EctomycorrhizalIt forms a symbiotic relationship with the roots of trees, exchanging nutrients with them.
Common Names
- Basque
- kaskabeltza, onto-beltza, onto-Beltza, onddobeltz, onyo-beltza, onto baltza, onto-beltz
- Catalan
- cep negre, ciuró, sureny fosc, cap negre, mollerol, ciureny fosc, sureny, ciureny, cigró, cep
- Danish
- Bronze-rørhat
- Dutch
- Bronskleurig eekhoorntjesbrood
- English
- Bronze Bolete
- French
- Cèpe bronzé
- German
- Schwarzer Steinpilz
- Norwegian Bokmål
- eikesteinsopp
- Norwegian Nynorsk
- eikesteinsopp
- Spanish
- cabeza de fraile, boleto negro, hongo negro, Hongo negro, Hongo calabaza, ontobeltza, cabeza de negro, boleto bronceado
- Swedish
- svartbrun stensopp
- Ukrainian
- Боровик бронзовий
- Welsh
- Cap Tyllog Efydd
Synonyms
- Boletus aereus
- Boletus cepa
- Boletus cravetta
- Boletus sykorae
- Dictyopus aereus
- Suillus aereus
- Tubiporus aereus