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.
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, 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, 2017 Unnamed 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, 2017 Unnamed 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, 2017 Unnamed 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, 2018 Saint Petersburg, Russia, 197755
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