Translucent white mushrooms Delicatula integrella in Alexander Park in Pushkin, suburb of Saint Petersburg. Russia, July 31, 2016Synonyms: Agaricus integrellus, Delicatula bagnolensis, Mycena integrella, Omphalia caricicola, Omphalia integrella, Omphalina integrella.
Russian name: Delikatula malenkaya.
Delicatula integrella is a small, delicate fungus that grows on soil, moss, and plant debris. In St. Petersburg and Leningrad Oblast, it has been found in coniferous and mixed forests, typically fruiting from July to October. In north-western Russia, it is considered a rare species, with scattered records in the regions of Murmansk, Arkhangelsk, and Vologda. The fungus has a bell-shaped cap, 0.5-2 cm in diameter, with a pale brown to yellowish-brown color, and a slender stem, 1-3 cm long, with a white to pale brown color.
Translucent white mushrooms Delicatula integrella in Alexander Park in Pushkin, suburb of Saint Petersburg. Russia, July 31, 2016
Small white mushrooms Delicatula integrella on a tree stump in Alexander Park in Pushkin, suburb of Saint Petersburg. Russia, July 31, 2016
Wood-rotting mushrooms (Delicatula integrella) on a large oak tree in Lisiy Nos, 5 miles west from Saint Petersburg. Russia, August 5, 2016
Group of wood-rotting mushrooms (Delicatula integrella) on a large oak tree in Lisiy Nos, 5 miles west from Saint Petersburg. Russia, August 5, 2016
Small wood-rotting mushrooms (Delicatula integrella) on a large oak tree in Lisiy Nos, 5 miles west from Saint Petersburg. Russia, August 5, 2016
Tiny young mushrooms Delicatula integrella on bark of an oak near Lisiy Nos. West from Saint Petersburg, Russia, August 23, 2017
Mushrooms Delicatula integrella on a stick in wet area when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
Mushrooms Delicatula integrella on a stick both in natural light and under 365 nm ultraviolet (UV-A) blacklight near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
Mushrooms Delicatula integrella on a fallen tree branch near standing water when exposed to regular daylight as well as when illuminated by a 365 nm ultraviolet (UV-A) blacklight near Lisiy Nos, west from Saint Petersburg. Russia, July 19, 2024
Small white mushrooms Delicatula integrella on a fallen twig in Kuzmolovo, north from Saint Petersburg. Russia, August 9, 2024
Close-up of small white mushrooms Delicatula integrella on a fallen twig in Kuzmolovo, north from Saint Petersburg. Russia, August 9, 2024Delicatula integrella was observed in various locations in Leningrad Oblast and north-western Russia. In Alexander Park, Pushkin, translucent white mushrooms were found on a tree stump on July 31, 2016. Similar observations were made on large oak trees in Lisiy Nos, with small wood-rotting mushrooms present on August 5, 2016. Tiny young mushrooms were also spotted on an oak tree bark near Lisiy Nos on August 23, 2017. Under UV-A blacklight, the mushrooms exhibited notable fluorescence, as seen in observations near Lisiy Nos on July 19, 2024. Additional sightings included small white mushrooms on a fallen twig in Kuzmolovo on August 9, 2024, and on a stick in a wet area near Lisiy Nos. The fungus was often found in proximity to standing water or on decaying wood. Observations spanned multiple years, from 2016 to 2024.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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