Lead shot slime mold Cribraria argillacea in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, September 14, 2017
Parkovaya Ulitsa, 5, Tyarlevo, Sankt-Peterburg, Russia, 196625Synonyms: Cribraria micropus, Cribraria vulgaris, Stemonitis argillacea, Trichia argillacea.
Common name: lead shot.
Russian name: Kribrariya glinistaya.
Cribraria argillacea is a species of slime mold that belongs to the phylum Mycetozoa. It is characterized by its small to medium-sized fruiting bodies, typically 0.5-2 mm in diameter, with a greyish-brown to dark brown peridium and white or pale yellow stalk. In St. Petersburg, Leningrad Oblast, and north-western Russia, Cribraria argillacea has been found on decaying wood, mosses, and other organic substrates in forests, parks, and other humid environments. It is considered a relatively rare species in the region, but can be locally common in areas with suitable habitat and moisture levels.
Lead shot slime mold Cribraria argillacea in Pavlovsk Park. Pavlovsk, a suburb of Saint Petersburg, Russia, September 14, 2017Parkovaya Ulitsa, 5, Tyarlevo, Sankt-Peterburg, Russia, 196625The observation of Cribraria argillacea in Leningrad Oblast and north-western Russia revealed its presence in various locations. In Pavlovsk Park, a suburb of Saint Petersburg, the species was found on September 14, 2017. The slime mold was growing on decaying wood, specifically on a log in a shaded area. Further observations in the region showed that Cribraria argillacea prefers moist, humid environments with abundant organic matter. It was also found in other areas of Leningrad Oblast, including forests and woodland edges, often associated with mosses and liverworts. The species' fruiting bodies were typically small, ranging from 0.5 to 2 mm in diameter, and displayed a characteristic lead-shot appearance. These findings contribute to the understanding of the distribution and ecological preferences of Cribraria argillacea in north-western Russia. Additional records are needed to fully understand its range and habits in the region.
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