Synonyms: Calloria xanthostigma, Helotium persoonii, Hymenoscyphus rufulus, Orbilia alnea, Orbilia botulispora, Orbilia coccinella, Orbilia delicatula, Orbilia hypothallosa, Orbilia leucostigma, Orbilia microspora, Orbilia millispora, Orbilia paradoxa, Orbilia rubella, Peziza delicatula, Peziza rufula, Peziza xanthostigma, Pezizella rufula.
Common name: common glasscup.
Russian name: Orbiliya zheltoglazkovaya.
Orbilia xanthostigma is a species of fungus in the family Orbiliaceae. It is characterized by its bright yellow to orange discoid apothecia with a waxy texture. In St. Petersburg and Leningrad Oblast, it has been found growing on decaying wood, particularly on coniferous trees such as spruce and pine. In north-western Russia, the fungus typically fruits in late summer to early autumn, often in association with mosses and other microfungi. It is considered a rare species in the region, but can be locally common in suitable habitats.
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
Novorossiyskaya ul., 18, Sankt-Peterburg, Russia, 194156
Common glasscup fungus (Orbilia xanthostigma) on a stump in Kannelyarvi, 45 miles north from Saint Petersburg. Russia, August 12, 2017Unnamed Road, Kannelyarvi, Leningradskaya oblast', Russia, 188850
Common glasscup fungus (Orbilia xanthostigma) on a stump in Tarkhovka near Sestroretsk, west from Saint Petersburg. Russia, August 27, 2018Saint Petersburg, Russia, 197701Observations of Orbilia xanthostigma in Leningrad Oblast and north-western Russia reveal its presence in various locations. In Lesnoy Park, Saint Petersburg, it was found alongside Hypocrea gelatinosa on July 30, 2017. On August 12, 2017, the fungus was spotted on a stump in Kannelyarvi, approximately 45 miles north of Saint Petersburg. Another sighting occurred on August 27, 2018, on a stump in Tarkhovka near Sestroretsk, west of Saint Petersburg. These findings suggest that Orbilia xanthostigma is relatively common in the region, often growing on stumps and potentially co-occurring with other fungi like Hypocrea gelatinosa. The observations span multiple locations and years, indicating a stable presence of the fungus in Leningrad Oblast and north-western Russia. The specific habitats and substrates, such as stumps, appear to support its growth.
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