Rust fungus Chrysomyxa pyrolae on a leaf of shinleaf (Round-leaved Wintergreen, Pyrola rotundifolia, Russian name Grushanka) in Kuzmolovo, north from Saint Petersburg. Russia, May 16, 2017Synonyms: Aecidium pyrolae, Aecidium pyrolatum, Caeoma pyrolatum, Chrysomyxa pyrolata, Melampsoropsis pyrolae, Uredo pyrolata.
Russian name: Khrizomiksa grushankovaya.
Extract from Wikipedia article: Chrysomyxa pyrolae, is a species of rust fungi in the Coleosporiaceae family that can be found in such US states such as Alabama, Colorado, Maine and Vermont.
Chrysomyxa pyrolae is a species of rust fungus that infects the leaves of wintergreen plants, particularly Pyrola species. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found to be widely distributed, with reports of its presence in various regions, including the Karelian Isthmus and the Murmansk Oblast. The fungus typically produces orange to yellowish-orange spores on the underside of infected leaves, causing distinctive rust-colored pustules. It is a common component of the regional mycobiota, with many records from coniferous forests and bogs, where its host plants are abundant.
Rust fungus Chrysomyxa pyrolae on a leaf of shinleaf (Round-leaved Wintergreen, Pyrola rotundifolia, Russian name Grushanka) in Kuzmolovo, north from Saint Petersburg. Russia, May 16, 2017
Texture of rust fungus Chrysomyxa pyrolae on a leaf of shinleaf taken from old railroad path in Kuzmolovo, north from Saint Petersburg. Russia, May 16, 2017
Rust fungus Chrysomyxa pyrolae on a lower leaf surface of shinleaf taken from old railroad path in Kuzmolovo, north from Saint Petersburg. Russia, May 16, 2017
Rust fungus Chrysomyxa pyrolae underside of a leaf of shinleaf taken from old railroad path in Kuzmolovo, north from Saint Petersburg. Russia, May 16, 2017
Rust fungus Chrysomyxa pyrolae on lower surface of a leaf of shinleaf near Dibuny, north-west from Saint Petersburg, Russia, May 29, 2017
Unnamed Road, Sankt-Peterburg, Russia, 197758
Rust fungus Chrysomyxa pyrolae on shinleaf (Round-leaved Wintergreen, Pyrola rotundifolia) in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017Unnamed Road, Pesochnyy, Sankt-Peterburg, Russia
Rust fungus Chrysomyxa pyrolae on the underside of leaves of shinleaf (Round-leaved Wintergreen, Pyrola rotundifolia) in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017Unnamed Road, Pesochnyy, Sankt-Peterburg, Russia
Close up of rust fungus Chrysomyxa pyrolae on shinleaf (Round-leaved Wintergreen, Pyrola rotundifolia) in area of Dibuny - Pesochny, near Saint Petersburg. Russia, June 3, 2017Unnamed Road, Pesochnyy, Sankt-Peterburg, Russia
Rust fungus Chrysomyxa pyrolae on lower surface of a leaf of shinleaf near Kuzmolovo, north from Saint Petersburg. Russia, May 8, 2019Unnamed Road, Leningradskaya oblast', Russia, 188663
Rust fungus Chrysomyxa pyrolae on shinleaf (Round-leaved Wintergreen, Pyrola rotundifolia) on Lenin Trail in area of Razliv near Dibuny, north-west from Saint Petersburg, Russia, May 11, 2019Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Rust fungus Chrysomyxa pyrolae on the underside of leaves of shinleaf (Round-leaved Wintergreen, Pyrola rotundifolia) on Lenin Trail in area of Razliv near Dibuny, north-west from Saint Petersburg, Russia, May 11, 2019Leninskaya Tropa, Pesochny, Sankt-Peterburg, Russia
Rust fungus Chrysomyxa pyrolae on shinleaf (Pyrola rotundifolia) in Kuzmolovo, north from Saint Petersburg. Russia, May 21, 2021Unnamed Road, Leningradskaya oblast', Russia, 188663
Rust fungus Chrysomyxa pyrolae on underside of a leaf of shinleaf (Pyrola rotundifolia) in Kuzmolovo, north from Saint Petersburg. Russia, May 21, 2021Unnamed Road, Leningradskaya oblast', Russia, 188663Observations of the fungus Chrysomyxa pyrolae were made in Leningrad Oblast and north-western Russia on the leaves of shinleaf (Pyrola rotundifolia). The rust fungus was found on the lower surface of leaves, often with a distinct texture. It was observed in various locations, including Kuzmolovo, Dibuny, Pesochny, and Razliv, near Saint Petersburg. The fungus was present on leaves from May to June, with observations made in 2017, 2019, and 2021. Close-up views of the fungus revealed its details, and it was often found on the underside of leaves. The observations suggest that Chrysomyxa pyrolae is a common parasite of shinleaf in the region, with a widespread distribution across Leningrad Oblast and north-western Russia. The fungus was consistently found on the same host plant species, indicating a specific relationship between the two organisms.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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