Royal bolete or Yellow bolete

Cap 5–15 cm, hemispherical in young mushrooms, then cushion-shaped and flattened-convex. Color pinkish raspberry, pinkish red, darkening with age to brownish red. Surface matte, slightly fibrous in dry weather, a little slimy in wet weather. The cap skin does not peel. The cap margin is rolled inward at first, then straightens out.

Cap 6–15 cm, hemispherical in young mushrooms, then cushion-shaped. Color bright yellow to ochre-yellow, with a reddish tinge in the center in mature ones. The surface is matte, slightly sticky in wet weather, and dry and faintly rough in dry weather.

Hymenophore tubular, free or slightly notched at the stem. Lemon yellow, turning ochre-yellow with age, olive in old mushrooms. Pores small and round. When pressed it may turn faintly blue or not change color at all — unusual for a bolete.

Hymenophore tubular, with a small notch near the stem. Yellow when young, olive-yellow in mature ones. Pores small, round, YELLOW (this sets it apart from its relative Neoboletus luridiformis, which has red pores). They quickly turn blue when pressed.

Stem 5–14 cm tall, 2–6 cm thick, bulbous at the base, then cylindrical. Color lemon yellow to ochre-yellow, with a clearly visible fine net on the upper part (a hallmark of the genus Butyriboletus). Sometimes with a pinkish tinge at the base.

Stem 6–14 cm tall, 2–4 cm thick, bulbous or slightly club-shaped. Color bright yellow, with fine reddish dots and streaks, but WITHOUT a continuous red net (unlike N. luridiformis). Turns blue when pressed.

Flesh lemon yellow, reddish under the cap skin, very firm and heavy. When cut, the color does not change or turns slightly blue in spots. This is another important diagnostic feature — most pink-capped boletes turn blue instantly and strongly.

Flesh bright yellow, firm in young mushrooms. When cut, it turns blue QUICKLY and STRONGLY — the characteristic reaction of the genus Neoboletus. After 5–10 min it settles to a grayish blue. This is normal and not a sign of toxicity.

Smell faint, pleasantly mushroomy, with notes of fresh hazelnut. Taste mild, sweetish, with no bitterness and no peppery notes.

Smell pleasant, mushroomy, with no distinctive notes. Taste mild and delicate, with a nutty hint.