Brownberry hardy

Scientific synonyms ^[1] :

• Boletus duriusculus Schulzer , 1874 basionym
• Krombholzia aurantiaca subsp. duriuscula (Schulzer) Maire , 1933
• Leccinum aurantiacum subsp. duriusculum (Schulzer) Vassilkov , 1956
• Leccinum nigellum Redeuilh , 1995

Russian synonyms: hard-browed brownish, poplar brownish, hardy.

The cap is 6–15 cm in diameter; in young mushrooms it is hemispherical, later convex, in mature mushrooms it is pillow, sometimes with a slightly depressed center. The peel of the cap is slightly pubescent or adpressed-scaly, in maturity it is bare, smooth and dull, mucous in wet weather; hanging over the tubules. The color of the cap is extremely changeable - from a pale gray-brown with a slight violet shade to ocher-, pink or reddish-brown; in young mushrooms it is of the same color with pulp, later it is noticeably darker.

The flesh is firm, in the cap and the upper part of the leg is white, at the base of the leg it is often yellowish-green; on a bend in the cap, it turns pink or red, on the top of the foot it becomes reddish-gray, at the base of the foot turns green or blue, and later turns black. The taste is pleasant; the smell is weak, mushroom.

Tubes 12-25 mm long, from grown to almost free, whitish, then creamy-yellowish or grayish, when pressed, become olive-brown. The pores are small, 0.3-0.5 mm in diameter, rounded, whitish, then creamy yellowish.

Leg 5–16 x 1–3.5 cm thick, cylindrical or spindle-shaped, sometimes pointed at the base, solid, whitish or creamy in the upper part, brownish in the lower part, bluish at the base; covered with brown or blackish scales, increasing to the base, often located in longitudinal rows or rollers and sometimes, especially in the upper part of the leg, merging into a mesh pattern that contrasts sharply with the whitish surface of the leg.

Microstructures

Spore powder is olive-brown or light ocher. Spores 13-17 x 5-7 microns, ellipsoidal or ellipsoidal-spindle-shaped, smooth, relatively thick-walled, pale ocher.

Basidia 19-37 x 6.0-9.0 microns, clavate, four spores. Hymenial cystides 20–75 x 5.5–17 x 2.0–4.0 µm, butyl-shaped, colorless, or with brown intracellular pigment. Kaulocystides 25–110 x 5.0–12 x 2.0–6.5 μm, butyl-shaped or spindle-shaped, thin or thick-walled, colorless or with brown intracellular pigment. There are no buckles ^[2] .

It grows on soil in deciduous and mixed forests, forming mycorrhiza with aspen and poplars (especially often with Populus alba ), singly or in small groups. It prefers calcareous soils, it is also found on sandy soils and loam . It is quite rare from the end of July to mid-November.

It is similar to other types of brown hair grains . Similarities with poisonous and inedible species does not have.

Edible mushroom, favorably differs from other brownberry by dense pulp, which is rarely wormy. It is used in fresh and dried form; goes on cooking various dishes.

• Aurel Dermek . Mushrooms - Bratislava: Slovart, 1989. - p. 184-185.
• Henk C. den Bakker & Machiel E. Noordeloos . A revision of the European species of Leccinum Gray and notes on extralimital species. Persoonia 18 (4), 2005: 511–587.

• Brownberry hardish on the site "Mushrooms of the Kaluga region . "
• Brownberry harsh on the site RogersMushrooms .
• Brownberry harsh on First Nature website.