Species flashcards

Description

Cap: 6–10(12) cm across; hemispherical when young, later convex and flattening. Bare, sticky when wet and shiny when dry. Orange-red, blood-red to purplish red, fading somewhat in age.

Tubes and pores: Tubes yellow, later olive-brownish. Pores narrow, orange to blood-red and protruding towards the stem in a shallow groove; strongly blueing when damaged.

Stem: 5–10 cm tall and 2–4 cm thick, club-shaped or cylindrical, slightly rooting at the base. Yellow ground colour with red granular dots, sometimes finely reticulated at the apex; bruising blue.

Flesh: Thick, firm when young and softening later, pale cream-yellow. Red-spotted in the stem base and blueing when cut. Odour pleasant, taste mild.

Spores: Spore print olive-brown. Spores fusiform, boletoid and smooth, 10–13 × 4–5.2 µm.

Occurrence: A mycorrhizal species of warm deciduous woodland on acidic soils. It occurs chiefly with oak, sweet chestnut and beech; rare.

Edibility: Treat as poisonous; especially raw specimens may cause gastrointestinal symptoms. Protected in Hungary and therefore not to be collected.

Lookalikes: It may resemble Satan's bolete, the purple bolete and the wolf bolete. The shiny bright carmine-red cap, red pores and blueing flesh are important features in combination.

Note: Rubroboletus combines Latin „ruber”, red, with the traditional genus name Boletus; it is a genus established following molecular phylogenetic studies. dupainii was given by Jean Louis Émile Boudier in honour of Victor Dupain, who contributed to the discovery of the species.

Species description: Jean Louis Émile Boudier first described the species in 1902 as Boletus dupainii. Kuan Zhao and Zhu L. Yang transferred it to Rubroboletus in 2014.

Taxonomy

1. PhylumBasidiomycota
2. ClassAgaricomycetes
3. OrderBoletales
4. FamilyBoletaceae
5. GenusRubroboletus

• Species: Rubroboletus dupainii
• Authority: (Boud.) Kuan Zhao & Zhu L. Yang (2014)
• English name: Dupain's bolete
• Ecological status: mycorrhizal
• Edibility: poisonous