Inedible boletus (Caloboletus calopus) photo and description

Inedible boletus (Caloboletus calopus)

  • Department: Basidiomycota (Basidiomycetes)
  • Subdivision: Agaricomycotina (Agaricomycetes)
  • Class: Agaricomycetes (Agaricomycetes)
  • Subclass: Agaricomycetidae (Agaricomycetes)
  • Order: Boletales
  • Family: Boletaceae
  • Genus: Caloboletus (Kalobolet)
  • Species: Caloboletus calopus (Boletus inedible)
    Other names for the mushroom:

  • Boletus beautiful-legged
  • Boletus is beautiful

Other names:

  • Boletus calopus

  • Boletus is beautiful

  • Boletus inedible

Inedible boletus (Boletus calopus)

Photo by: Michal Mikšík


The cap is light brown, olive-light brown, brown or brown-gray, smooth, occasionally wrinkled, in young mushrooms slightly fibrous, matte, dry, naked with age, at first semicircular, later convex with a curled and unevenly wavy edge, 4 -15 cm.

The tubules are initially lemon-yellow, later olive-yellow, blue at the cut, 3-16 mm long, at the stem notched or free. The pores are rounded, small, at first grayish-yellow, later lemon-yellow, with age with a greenish tint, turn blue when pressed.

Spores 12-16 x 4-6 microns, ellipsoid-fusiform, smooth, ocher. Spore powder brownish olive.

The leg is at first barrel-shaped, then clavate or cylindrical, sometimes pointed at the base, made, 3-15 cm high and 1-4 cm thick. In the upper part it is lemon yellow with a white fine mesh, in the middle part it is carmine red with a noticeable red mesh, in the lower part it is usually brown-red, white at the base. Over time, the red color may be lost.

The flesh is dense, firm, whitish, light cream, turns blue in places on the cut (mainly in the cap and in the upper part of the leg). The taste is sweetish at first, then very bitter, without a special smell.


Inedible boletus grows on soil from July to October in coniferous forests in mountainous areas under spruce trees, occasionally in deciduous forests.


Boletus is inedible to some extent similar to the raw poisonous Dubovik (Boletus luridus), but it has red pores, a soft pulp taste, and it grows mainly under deciduous trees. You can confuse the inedible boletus with the Satanic mushroom (Boletus satanas). It is characterized by a whitish cap and carmine-red pores. The rooting boletus (Boletus radicans) is similar to the inedible boletus.


Not edible due to unpleasant bitter taste.


Boletus (m) from bolos Greek. a lump of clay [Fries, EM Systema mycologicum I: 386 (1821)]; calopus from kalos Greek. beautiful, beautiful + pous, podos greek. leg.