The agarices forming mycorhiza of the Perm region

Since 1975 in the Perm Region there have been studied agarics with the help of route and stationary methods. The stationary research has been carried out in 10 types of woods: 2 spruce-groves, 4 pine-woods, a birch and aspen grove, a lime grove, an alder carr. All the arboreous plants have well-developed mycorrhiza. The mushrooms forming mycorrhiza are represented in 306 species and intraspecific taxa that account for 4 1% of all the species. They are dominant according to their mass in various ecosystems. The majority of the mushrooms forming mycorrhiza (177 species) are edible, 28 species are poisonous.