Root boletus (Caloboletus radicans)
- Division: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Agaricomycetidae (Agaricomycetes)
- Order: Boletales (Boletales)
- Family: Boletaceae (Boletaceae)
- Genus: Caloboletus (Calobolet)
- Type: Caloboletus radicans (Rooted boletus)
- Boletus stocky
- Bolet deep-rooted
- Boletus whitish
- Boletus rooting
Author of the photo: I. Assyova
head with a diameter of 6-20 cm, occasionally reaches 30 cm, in young mushrooms it is hemispherical, then convex or cushion-shaped, the edges are initially bent, in mature specimens straightened, wavy. The skin is dry, smooth, whitish with gray, light fawn, sometimes with a greenish tint, turns blue when pressed.
Hymenophore sunken at the stalk, the tubes are lemon-yellow, then olive-yellow, turn blue on the cut. The pores are small, rounded, lemon-yellow, turn blue when pressed.
spore powder olive brown, spores 12-16*4.5-6 µm in size.
Leg 5-8 cm high, occasionally up to 12 cm, 3-5 cm in diameter, tuberous-swollen, cylindrical in maturity with a tuberous base. The color is lemon yellow in the upper part, often with brown-olive or bluish-green spots at the base. The upper part is covered with uneven mesh. It turns blue on the cut, acquires an ocher or reddish tint at the base
Pulp dense, whitish with a blue tint under the tubules, turns blue on the cut. The smell is pleasant, the taste is bitter.
The rooting boletus is common in Europe, North America, North Africa, although it is not common everywhere. Heat-loving species, prefers deciduous forests, although it occurs in mixed forests, often forms mycorrhiza with oak and birch. Rarely seen from summer to autumn.
Rooting Boletus may be confused with the satanic mushroom (Boletus satanas), which has a similar cap color but differs from it in yellow tubules and a bitter taste; with a beautiful boletus (Boletus calopus), which has a reddish leg in the lower half and is distinguished by an unpleasant odor.
Rooted boletus Inedible due to bitter taste, but not considered poisonous. In Pelle Jansen’s good guide, “All About Mushrooms” is erroneously listed as edible, but the bitterness does not disappear during cooking.