Synonyms: Stemonitis castillensis, Stemonitis dictyospora, Stemonitis fasciculata, Stemonitis maxima, Stemonitis nigrescens, Trichia nuda.
Russian name: Stemonitis buryy.
Extract from Wikipedia article: Stemonitis fusca is a species of slime mold. It fruits in clusters on dead wood and has distinctive tall brown sporangia supported on slender stalks with a total height of approximately 6–20 mm tall.
Stemonitis fusca is a species of slime mold that belongs to the order Stemonitales. It is characterized by its dark brown to black sporotheca, typically 0.5-1.5 mm in diameter, with a cylindrical to clavate shape and a rounded apex. The sporotheca is usually sessile or short-stalked, and the capillitium is dense and reticulate. In St. Petersburg, Leningrad Oblast, and north-western Russia, Stemonitis fusca has been found growing on decaying wood, especially coniferous logs, as well as on mosses and other vegetation in moist, shaded areas. It typically fruits from late summer to early autumn, and is considered a relatively common species in the region.
Tall brown sporangia of slime mold Stemonitis fusca on a log with tiny grey cups of common grey disco fungus (Mollisia cinerea) in Lembolovo, 40 miles north from Saint Petersburg. Russia, July 5, 2017
Unnamed Road, Leningradskaya oblast', Russia, 188695
Young stage of slime mold Stemonitis fusca in Sosnovka Park. Saint Petersburg, Russia, July 19, 2017Unnamed Road, Sankt-Peterburg, Russia
Young stage of slime mold Stemonitis fusca on a stump in Sosnovka Park. Saint Petersburg, Russia, July 20, 2017Unnamed Road, Sankt-Peterburg, Russia, 194064
Young stage of slime mold Stemonitis fusca in Gardens of Polytechnic Institute. Saint Petersburg, Russia, July 29, 2017Politekhnicheskaya ul., 29, Sankt-Peterburg, Russia, 195251
Young stage of slime mold Stemonitis fusca in Sosnovka Park. Saint Petersburg, Russia, August 4, 2017Unnamed Road, Sankt-Peterburg, Russia
Brown sporangia of slime mold Stemonitis fusca on a log in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 12, 2017Unnamed Road, Kannelyarvi, Leningradskaya oblast', Russia, 188850Observations of Stemonitis fusca in Leningrad Oblast and north-western Russia revealed the species' presence in various locations. On July 5, 2017, tall brown sporangia were found on a log in Lembolovo, alongside Mollisia cinerea fungus. In Sosnovka Park, young stages of Stemonitis fusca were observed on July 19 and 20, 2017, on different substrates. Similar young stages were also found in Gardens of Polytechnic Institute on July 29, 2017, and again in Sosnovka Park on August 4, 2017. Brown sporangia were spotted on a log in Kannelyarvi on August 12, 2017. These observations suggest that Stemonitis fusca is widespread in the region, with a presence in both urban and rural areas, and can be found on various types of substrates, including logs and stumps. The species was observed in different stages of development throughout the summer months.
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