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The fruit body is medium in size or large, consists of a stem and a cap with a lamellar hymenophore. The cap is up to 15 cm in diameter and up to 3 cm thick, rounded, convex, later slightly depressed in the center. Coloring from whitish-grayish to grayish-brown, often with radial white or greenish streaks. The surface of the cap is smooth, gradually cracking, starting from the center, with thin scales. The pulp is thick, hard-fleshy, white, grayish-violet at the break. The tubes are somewhat descending, of the same color as the pulp. The pores are round or angular, 2-3 x 1 mm, white, turning pinkish-brown when touched, and gray when dried. Stem 2-6 x 1-2 cm, cylindrical, often swollen at the base, usually shorter than the diameter of the cap and the same color as it. Edible, but of poor quality. Spore powder, yellowish-brownish; spores are tuberous, almost spherical, 5-6.5 x 4-5 microns.
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Spreading |
Europe and North America, mainly in the taiga zone and the corresponding belt of mountains. Extremely rare everywhere. In Russia, the species was found in Karelia, Leningrad, Sverdlovsk and Chelyabinsk regions, as well as in Kabardino-Balkaria. In the Tula region, it is probably located near the southern border of the flat part of the range; noted in the Aleksinsky region.
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Lifestyle |
Inhabits poor sandy soils in dry pine forests. Forms mycorrhiza with pine. In the region, it was found in an overmature complex pine forest with rich undergrowth and developed grass cover. Fruiting bodies are solitary, formed in August-October, but not annually.
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Number |
Several fruit chalk has been found in the only known locality.
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Limiting factors |
A rarity in an area of suitable habitat. The threat is posed by deforestation, soil compaction due to livestock grazing and recreation, soil pollution with nitrogen compounds, including organic fertilizers, as well as the collection of fruit bodies by the population.
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Security measures |
Security measures taken. Proposed for inclusion in Appendix I to the Berne Convention. Necessary security measures. Monitoring the status of a known population. Search for new localities of the species in the pine forests of the ancient valley of the r. Oka and, if necessary, the organization of the protection of the discovered populations.
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Links |
1. Bondartseva, 1998; 2. Shiryaev, 2008b; 3. 33 threatened ..., 2003; 4. information from the authors of the essay.
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Compilers |
Shiryaev A.G., Svetasheva T. Yu.
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