Gelatinous droplets of a fungus Hypocrea gelatinosa on rotting wood in Lesnoy Park (Lesotekhnicheskiy Universitet). Saint Petersburg, Russia, July 30, 2017Synonyms: Chromocrea gelatinosa, Creopus gelatinosus, Hypocrea moriformis, Hypocrea oligotheca, Sphaeria gelatinosa, Sphaeria pallida.
Russian names: Gipokreya zhelatinoznaya, Gipokreya studenistaya.
Hypocrea gelatinosa is a species of fungus that belongs to the family Hypocreaceae. In St. Petersburg, Leningrad Oblast, and north-western Russia, it has been found growing on decaying wood, particularly on coniferous trees such as spruce and pine. The fungus produces gelatinous, yellowish to orange-colored stromata with white or light-colored margins, and its ascospores are white, unicellular, and ellipsoidal in shape. It typically fruits in late summer to early autumn, and is considered a rare species in the region.
Gelatinous droplets of a fungus Hypocrea gelatinosa on rotting wood in Lesnoy Park (Lesotekhnicheskiy Universitet). Saint Petersburg, Russia, July 30, 2017
Gelatinous droplets of a fungus Hypocrea gelatinosa together with common glasscup fungus (Orbilia xanthostigma) in Lesnoy Park (Lesotekhnicheskiy Universitet). Saint Petersburg, Russia, July 30, 2017
Gelatinous droplets of a fungus Hypocrea gelatinosa on rotting wood near Lisiy Nos, south from Saint Petersburg. Russia, August 17, 2018
Droplets of a fungus Hypocrea gelatinosa on rotting log near Lisiy Nos, south from Saint Petersburg. Russia, August 17, 2018
Gelatinous droplets of a fungus Trichoderma gelatinosum (Hypocrea gelatinosa)(?) in Kuzmolovo, north from Saint Petersburg. Russia, August 23, 2018
Close up of a fungus Trichoderma gelatinosum (Hypocrea gelatinosa)(?) on a log in Kuzmolovo, north from Saint Petersburg. Russia, August 23, 2018Observations of Hypocrea gelatinosa were made in Leningrad Oblast and north-western Russia. The fungus was found growing on rotting wood in various locations, including Lesnoy Park in Saint Petersburg and near Lisiy Nos, south of the city. Gelatinous droplets of the fungus were observed on July 30, 2017, and August 17, 2018, often in association with other fungi such as Orbilia xanthostigma. Similar observations were made in Kuzmolovo, north of Saint Petersburg, on August 23, 2018, although the identification was uncertain. The fungus was typically found on rotting logs or wood, suggesting a preference for decaying organic matter. Close-up observations revealed the characteristic gelatinous droplets of the fungus, which were often abundant and conspicuous. Overall, Hypocrea gelatinosa appears to be a common inhabitant of decaying wood in the region.
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