Far Eastern oak (Rugiboletus extremiorientalis)
Systematics:- Department: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Agaricomycetidae (Agaricomycetes)
- Order: Boletales
- Family: Boletaceae
- Genus: Rugiboletus
- Species: Rugiboletus extremiorientalis (Far Eastern oak)
Synonyms:
Leccinum extremiorientale
Hat: Far Eastern obabok (Rugiboletus extremiorientalis) is buffy-yellow in color. In young mushrooms, the cap is ball-shaped, in mature mushrooms it is pillow-shaped, convex. The surface of the cap is covered with radial wrinkles. There are remnants of a bedspread on the edges of the cap. In the lower part, the cap is tubular, at the base of the stem of the tube there are dents. Young mushrooms have a yellow tubular layer, mature ones olive-yellow. The diameter of the cap is up to 25 cm. The skin is slightly wrinkled, tuberous, brownish in color. In dry weather, the skin is cracked. The hyphae of the peel of the cap are standing, dull, yellow in color.
Spore powder: yellowish ocher.
Stem: The stem of the mushroom has a cylindrical shape, ocher color, the surface of the stem is covered with small brown scales. Scales of the leg consist of hyphae bundles, which are similar to vultures on the skin of the cap.
Leg length 12-13 cm. Thickness 2-3.5 cm. Solid, strong leg.
Flesh: At first, young mushrooms have firm flesh, ripe mushrooms have a friable flesh. When cut, the pulp becomes pinkish. The color of the flesh is off-white.
Spores: fusiform, pale brown.
Distribution: found in the southern part of Primorsky Krai, grows in oak forests. It grows abundantly in places. Fruiting time August - September.
Edible: Far Eastern chunks are fit for human consumption.