Red-olive webcap (Cortinarius rufoolivaceus)
- Department: Basidiomycota (Basidiomycetes)
- Subdivision: Agaricomycotina (Agaricomycetes)
- Class: Agaricomycetes (Agaricomycetes)
- Subclass: Agaricomycetidae (Agaricomycetes)
- Order: Agaricales (Agaric or Lamellar)
- Family: Cortinariaceae (Spiderwebs)
- Genus: Cortinarius (Webcap)
- Species: Cortinarius rufoolivaceus (Red-olive webcap)
- Smelling cobweb;
- Fragrant webcap;
- Cortinarius rufo-olivaceus;
- Myxacium rufoolivaceum;
- Phlegmacium rufoolivaceum.
Red-olive spiderweb (Cortinarius rufoolivaceus) is a type of fungus belonging to the Spiderweb family, the Spiderweb genus.
The appearance of the olive-red cobweb is quite beautiful and attractive. The cap with a diameter of 6 to 12 cm, initially, in young mushrooms, has a spherical shape and a mucous surface. A little later it opens up, becoming widespread and acquiring a rich purple color along the edge. The middle of the cap in mature mushrooms becomes purple-purple or slightly reddish. The hymenophore is represented by the lamellar type. Its constituent components are plates that initially have an olive-yellow color, and as the mushroom matures, they become rusty-olive. They contain spores characterized by an almond shape, a light yellow tint and a warty surface. Their sizes are 12-147-8 microns.
The upper part of the mushroom leg has a pronounced purple color, it turns purple-red downward. The thickness of the leg of the red-olive spider web is 1.5-3 cm, and the length is from 5 to 7 cm. At the base, the stem of the fungus expands, acquiring a tuberous formation.
The mushroom pulp is very bitter in taste, characterized by a faint purple or olive green hue.
Season and habitat
Despite its widespread rarity, the red-olive cobweb is still widespread in non-moral European areas. Prefers to live in mixed and deciduous forests. Able to form mycorrhiza with deciduous trees, it occurs in nature only in large groups. It mainly grows under hornbeams, beeches and oaks. On the territory of the Russian Federation, the red-olive spider web can be seen in the Belgorod Region, Tatarstan, Krasnodar Territory, and Penza Region. The fruiting period occurs in the second half of summer and the first half of autumn. Red-olive spider web feels good on calcareous soils, in regions with a moderately warm climate.
Red-olive spiderweb (Cortinarius rufoolivaceus) belongs to edible mushrooms, but its nutritional properties have been little studied.
The described variety of mushrooms is very rare in nature, therefore in some European countries it was even listed in the Red Book as an endangered species.
Similar types and differences from them
The olive-red spider web is very similar in appearance to the edible brass-yellow spider web, which bears the Latin name Cortinarius orichalceus. True, in the latter, the cap has a brick-red color, the flesh at the leg is greenish, and the plates are characterized by a sulfur-yellow color.