Green fungus Hypomyces luteovirens covering brittlegill mushrooms in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017
ul. gruntovaya, Leningradskaya oblast', Russia, 188664Synonyms: Byssonectria luteovirens, Hypocrea luteovirens, Peckiella luteovirens, Sphaeria luteovirens.
Common name: yellow-green Russula mold.
Russian name: Gipomitses olivkovo-zelenyy.
Hypomyces luteovirens is a parasitic fungus that infects russula and lactarius mushrooms, turning them into a yellowish-green to bright yellow color. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found in coniferous and mixed forests, typically on species such as Russula paludosa, Russula integra, and Lactarius rufus. The fungus is relatively common in the region, with fruiting bodies appearing from July to September.
Green fungus Hypomyces luteovirens covering brittlegill mushrooms in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017ul. gruntovaya, Leningradskaya oblast', Russia, 188664
Yellow-green fungus Hypomyces luteovirens on brittlegill mushrooms in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017ul. gruntovaya, Leningradskaya oblast', Russia, 188664
Yellow-green fungus Hypomyces luteovirens on brittlegill mushrooms in cross section in a forest near Okhta River in Toksovo, north from Saint Petersburg. Russia, August 1, 2017ul. gruntovaya, Leningradskaya oblast', Russia, 188664Observations of Hypomyces luteovirens in Leningrad Oblast and north-western Russia reveal its presence on brittlegill mushrooms. The fungus was found covering the mushrooms with a green or yellow-green color in a forest near the Okhta River in Toksovo, north of Saint Petersburg. On August 1, 2017, observations showed the fungus completely covering the mushrooms, and cross-sections revealed its internal presence as well. The consistent yellow-green coloration of the fungus was noted across multiple observations, indicating its distinctive appearance on the brittlegill mushrooms in this region. These findings suggest that Hypomyces luteovirens is active in the area, infecting and altering the appearance of the host mushrooms. The observations provide insight into the fungus's behavior and characteristics in this specific geographic location.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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