Species flashcards

Description

Cap: Hemispherical, convex, thick-fleshed, 6-20 cm wide. Color grayish-brown, but occurs in several variations from pale yellow to faded gray. It can also be blurred spotted. Its surface is initially velvety, downy, chamois-like to the touch.

Tube layer: Very narrow-pored, yellow when young, later greenish-yellow. On pressure points, it immediately turns greenish-blue or bluish-black. Spore print brownish-yellow.

Stem: Rigid, solid, elongated. Mostly bulbous at the base, tapering below the thickening, about 6-15 cm long, 2-6 cm thick. Color yellow above, crimson-red below. On the stem, a carmine-red, purple-red network is visible, which is mostly quite developed.

Flesh: Pale yellow, firm, hard, slightly blues when broken.

Spore: Pale tobacco-brown; 12-16 x 4.5-6μm, elongated spindle-shaped.

Occurrence: Summer, early autumn mushroom. In deciduous forests and coniferous forests, mainly on calcareous soil. Mycorrhizal mushroom. Here, relatively rare, and where it appears, mostly found singly.

Edibility: Poisonous. After consumption, nausea, vomiting, diarrhea occur. Due to its bitterish taste, however, it is mostly not eaten. Also slightly poisonous when dried. Its smell is mildly, but not pleasantly, sourish. Unpleasantly bitterish taste.

Confusion: It can only be confused with the king bolete and other edible bolete species if the red color of the stem is not visible. Therefore, it is forbidden to collect boletes without a stem, and to sell only the caps. The velvet bolete has a slender stem, its stem may also have red color, but there is no network, and its taste is not bitterish. Very similar to it is the equally poisonous rooting bolete. Its stem, however, is mostly reticulated without red color, and the stem tapers into a pointed, root-like part in the soil below. Finally, the lurid bolete also resembles it, but its hymenium is red, and the network on the stem is long-meshed. The Satan's bolete is a light-capped, more ventricose-stemmed, similar mushroom, but its tube layer is also red.

Note: The Boletus name comes from the Greek word Bolos - lump of clay. calopus comes from Greek words: kalos - beautiful and pous - foot, referring to the yellow-red reticulated stem.

Species description: In 1801, Christiaan Hendrik Persoon named it Boletus calopus. Originally described in 1774 by Jacob Christian Schäffer as Boletus olivaceus.

Taxonomy

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

• Species: calopus
• Described by: Pers.
• Hungarian name: farkastinóru
• Lifestyle: mycorrhizal
• Edibility: poisonous