Caps of pinkish bonnet mushrooms (Mycena purpureofusca) with bonnet mold fungus Spinellus fusiger near Lisiy Nos, south from Saint Petersburg. Russia, September 3, 2016
Primorskoye sh., g. Sankt-Peterburg, Russia, 197755Synonyms: Mucor fusiger, Mucor macrocarpus, Mucor rhombosporus, Phycomyces agaricicola, Spinellus macrocarpus, Spinellus rhombosporus.
Common name: bonnet mould.
Russian names: Spinellius oshchetinivshiysya, Spinellus shchetinistyy, Spinellius fuziger, Spinellus oshchetinivshiysya.
Extract from Wikipedia article: Spinellus fusiger, commonly known as the bonnet mold, is a species of fungus in the Zygomycota phylum. It is a pin mold that is characterized by erect sporangiophores (specialized hyphae that bear a sporangium) that are simple in structure, brown or yellowish-brown in color, and with branched aerial filaments that bear the zygospores. It grows as a parasitic mold on mushrooms, including several species from the genera Mycena, including M. haematopus, M. pura, M. epipterygia, M. leptocephala, and various Collybia species, such as C. alkalivirens, C. luteifolia, C. dryophila, and C. butyracea. It has also been found growing on agaric species in Amanita, Gymnopus, and Hygrophorus.
Spinellus fusiger is a species of fungus that grows on fungi, particularly on species of Russula and Lactarius. In St. Petersburg and Leningrad Oblast, it has been found in coniferous and mixed forests, often associated with mosses and lichens. In north-western Russia, it is considered a rare species, typically fruiting in late summer to early autumn, and can be found on decaying logs, stumps, and tree roots.
Caps of pinkish bonnet mushrooms (Mycena purpureofusca) with bonnet mold fungus Spinellus fusiger near Lisiy Nos, south from Saint Petersburg. Russia, September 3, 2016Primorskoye sh., g. Sankt-Peterburg, Russia, 197755
Bonnet mould fungus (Spinellus fusiger) with thin sporangiophores against dark background on a cap of Mycena mushroom in Sosnovka Park. Saint Petersburg, Russia, August 4, 2017Unnamed Road, Sankt-Peterburg, Russia
Close up of bonnet mould fungus (Spinellus fusiger) with slender sporangiophores on a cap of Mycena mushroom in Sosnovka Park. Saint Petersburg, Russia, August 4, 2017Unnamed Road, Sankt-Peterburg, Russia
Mycena mushroom with a parasitic bonnet mould fungus (Spinellus fusiger) with visible slender sporangiophores in Sosnovka Park. Saint Petersburg, Russia, August 4, 2017Unnamed Road, Sankt-Peterburg, Russia
Bonnet mould fungus (Spinellus fusiger) on caps of Mycena mushrooms in a coastal forest between Lisiy Nos and Olgino, west from Saint Petersburg. Russia, September 6, 2018Saint Petersburg, Russia, 197755Observations of Spinellus fusiger in Leningrad Oblast and north-western Russia reveal its parasitic relationship with Mycena mushrooms. The fungus was found on caps of pinkish bonnet mushrooms (Mycena purpureofusca) near Lisiy Nos, south of Saint Petersburg, in September 2016. Similar observations were made in Sosnovka Park, Saint Petersburg, in August 2017, where the fungus had thin sporangiophores against a dark background on Mycena mushroom caps. Close-up views showed slender sporangiophores on the mushroom caps. The fungus was also spotted in a coastal forest between Lisiy Nos and Olgino, west of Saint Petersburg, in September 2018, again on Mycena mushrooms. These observations highlight the widespread presence of Spinellus fusiger in the region, consistently parasitizing Mycena species. The fungus's visible sporangiophores were a common feature across these sightings.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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