Rust fungus Puccinia urticata on leaves of common (stinging) nettle in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017Synonyms: Aecidium urticae, Caeoma urticae, Dicaeoma urticae, Puccinia caricina, Puccinia caricis, Puccinia urticae-acutae, Puccinia urticae-acutiformis, Puccinia urticae-flaccae, Puccinia urticae-hirtae, Puccinia urticae-inflatae, Puccinia urticae-paniceae, Puccinia urticae-ripariae, Puccinia urticae-vesicariae.
Common name: nettle clustercup rust.
Russian name: Puktsiniya krapivnaya.
Puccinia urticata is a species of rust fungus that infects nettle plants. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found to be widely distributed, with records of its presence dating back to the late 19th century. The fungus typically produces yellow or orange spores on the underside of nettle leaves, causing distinctive spots or blisters. It is commonly associated with Urtica dioica and Urtica urens, and has been reported in various habitats, including urban areas, forests, and wetlands.
Rust fungus Puccinia urticata on leaves of common (stinging) nettle in Sosnovka Park. Saint Petersburg, Russia, May 27, 2017The rust fungus Puccinia urticata was observed on the leaves of common nettle in Sosnovka Park, Saint Petersburg, Russia on May 27, 2017. The fungus formed orange-yellow pustules on the underside of the leaves, which were densely covered with spores. Similar observations were made in other parts of Leningrad Oblast and north-western Russia, indicating a widespread distribution of the fungus in the region. The infected nettle plants showed signs of chlorosis and necrosis, suggesting that the fungus had a significant impact on their health. Further observations revealed that the fungus was able to infect multiple species of nettle, highlighting its adaptability and potential to cause significant damage to plant populations. The presence of Puccinia urticata in the region suggests a need for further study to understand its ecology and potential impacts on local ecosystems.
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