Cinnabar red nectria (Nectria cinnabarina)
- Department: Ascomycota (Ascomycetes)
- Subdivision: Pezizomycotina (Pesizomycotins)
- Class: Sordariomycetes (Sordariomycetes)
- Subclass: Hypocreomycetidae
- Order: Hypocreales
- Family: Nectriaceae
- Genus: Nectria (Nectria)
- Species: Nectria cinnabarina (cinnabar-red nectria)
Description: Stromas are hemispherical or cushion-shaped ('flat lenses'), 0.5-4 mm in diameter, rather fleshy, pink, light red or cinnabar-red, later red-brown or brown. On the stroma, conidial sporulation first develops, and then perithecia, located in groups along the edges of the conidial stroma and on the stroma itself. With the formation of perithecia, the stroma acquire a granular appearance and a darker color. Perithecia are spherical, legs tapering downwards into a genus, with a papillary stomata, finely warty, cinnabar-red, later brownish. The bags are cylindrical-clavate.
Twins: Due to the bright color, specific shape and size, the cinnabar-red nectria mushrooms are rather difficult to confuse with mushrooms from other genera. At the same time, about 30 species of the genus Nectria (Nectria), growing on different substrates, live on the territory of the former USSR. Incl. gall-forming nectria (nectria galligena), nectria hematococcus (n. haematococca), purple nectria (n. violacea) and whitish nectria (n. candicans). The latter two parasitize on various myxomycetes, for example, on the widespread putrefactive fuligo (fuligo septica).
Similarity: Cinnabar-red nectria is similar to the closely related species Nectria coccinea, which is distinguished by lighter, translucent, smaller perithecia and microscopically (small spores).
Note: Inedible. The wound parasite, when damaged and unfavorable conditions, causes the death of individual branches or the entire tree (especially in young seedlings). In the affected part of the crown, leaves die first, and then diseased shoots. Wood is affected by white rot. Young trees usually become infected through the roots if they are found in the soil with the remains of infected trees. From the roots, the mycelium spreads through the vessels into the trunk, after which the tree suddenly withers. Fungus damage is promoted by air pollution, lack of water, mechanical damage to the trunks and frostbite. So it is a successful urban look.
Photo of the fungus Nectria cinnabar-red from the questions in recognition: