Slime mold Trichia scabra on rotten wood in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017
Ulitsa Zhaka Dyuklo, 67, St Petersburg, Russia, 194214Synonyms: Arcyria bucknallii, Hemiarcyria bucknallii, Trichia minima, Trichia nitens.
Russian name: Trikhiya shershavaya.
Trichia scabra is a species of slime mold characterized by its small to medium-sized sporocarps, typically 0.5-1.5 mm in diameter, with a roughened peridium and dark brown to black spores. In St. Petersburg, Leningrad Oblast, and north-western Russia, Trichia scabra has been found growing on decayed wood, moss, and other plant material in forests, particularly in areas with rich soil and moderate humidity. It is considered a relatively common species in the region, with occurrences reported in various types of woodland habitats, including coniferous, deciduous, and mixed forests.
Slime mold Trichia scabra on rotten wood in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017Ulitsa Zhaka Dyuklo, 67, St Petersburg, Russia, 194214
Close up of slime mold Trichia scabra on rotten wood in Sosnovka Park. Saint Petersburg, Russia, September 13, 2017Ulitsa Zhaka Dyuklo, 67, St Petersburg, Russia, 194214
Trichia scabra slime mold on rotting wood in Sobstvennaya Dacha Park. Old Peterhof, west from Saint Petersburg, Russia, May 17, 2019Petergof, Saint Petersburg, Russia
Slime mold Trichia scabra with moss on a log in Tarkhovka Park, west from Saint Petersburg. Russia, May 10, 2021Unnamed Road, Sankt-Peterburg, Russia, 197701
Slime mold Trichia scabra on a wet log in Tarkhovka Park, west from Saint Petersburg. Russia, May 10, 2021Unnamed Road, Sankt-Peterburg, Russia, 197701Observations of Trichia scabra in Leningrad Oblast and north-western Russia revealed its presence on rotten wood in various parks. In Sosnovka Park, Saint Petersburg, it was found on September 13, 2017, with a close-up view showing its distinct features. On May 17, 2019, it was spotted on rotting wood in Sobstvennaya Dacha Park, Old Peterhof. In Tarkhovka Park, west of Saint Petersburg, Trichia scabra was observed on a log with moss on May 10, 2021, and also on a wet log on the same day. These findings indicate that Trichia scabra thrives in moist environments with decaying wood, often coexisting with moss. The species appears to be widespread in the region, with sightings occurring over several years and locations, suggesting its adaptability to local conditions. The observations highlight the importance of monitoring slime mold populations in urban and natural areas.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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