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Ciboria amentacea – Catkin cup

Synonyms: Hymenoscyphus amentaceus, Peziza amentacea, Rutstroemia amentacea.

Common name: catkin cup.

Russian names: Tsiboriya serezhchataya, Tsiboriya amentatseya.

Extract from Wikipedia article: Ciboria amentacea, commonly known as the catkin cup, is a species of ascomycete fungus in the family Sclerotiniaceae. It is widespread in Europe and North America, where it grows on catkins of willow and alder. The species was first described by Giovanni Battista Balbis in 1804 as Peziza amentacea. Karl Wilhelm Gottlieb Leopold Fuckel transferred it to Ciboria in 1870.

AI-generated description

Ciboria amentacea is a species of fungus that belongs to the family Sclerotiniaceae. It is typically found in northern regions, including north-western Russia. In St. Petersburg and Leningrad Oblast, Ciboria amentacea has been reported to grow on the catkins of alder trees (Alnus spp.), particularly Alnus glutinosa and Alnus incana. The fungus produces small, cup-shaped apothecia that are 0.5-1.5 cm in diameter, with a brown to dark brown exterior and a pale yellow to orange interior. It is considered a rare species in the region, with limited records of its occurrence.

Photos of this mushroom from the area of St. Petersburg, Russia

Catkin cup (Ciboria amentacea) mushroom under alder in Lavriki, north from Saint Petersburg. Russia, March 14, 2017
sh. v Lavriki, 13, Lavriki, Leningradskaya oblast', Russia, 188662

Catkin cup (Ciboria amentacea) mushroom on rotting leaves under alder in Lavriki, north from Saint Petersburg. Russia, March 14, 2017
sh. v Lavriki, 13, Lavriki, Leningradskaya oblast', Russia, 188662

Catkin cup (Ciboria amentacea) mushrooms on rotting alder catkins taken from Lavriki, north from Saint Petersburg. Russia, March 14, 2017
pr. Raevskogo, 22, Sankt-Peterburg, Russia, 194064

Catkin cup (Ciboria amentacea) mushrooms under alder bushes near Morskaya, west from Saint Petersburg. Russia, March 16, 2017
Primorskoye sh., g. Sankt-Peterburg, Russia

Catkin cup (Ciboria amentacea) mushrooms on alder catkins near Morskaya, west from Saint Petersburg. Russia, March 16, 2017
Primorskoye sh., g. Sankt-Peterburg, Russia

Catkin cup (Ciboria amentacea) mushrooms taken from Morskaya, west from Saint Petersburg. Russia, March 16, 2017
pr. Raevskogo, 22, Sankt-Peterburg, Russia, 194064

Catkin cup (Ciboria amentacea) mushrooms under alder trees in Udelny Park. Saint Petersburg, Russia, March 22, 2017
pr. Ispytateley, 2к1А, Sankt-Peterburg, Russia, 197343

Cluster of catkin cup (Ciboria amentacea) mushrooms under alder trees in Udelny Park. Saint Petersburg, Russia, March 22, 2017
pr. Ispytateley, 2к1А, Sankt-Peterburg, Russia, 197343

Catkin cup (Ciboria amentacea) mushrooms on rotten leaves under alder trees in Udelny Park. Saint Petersburg, Russia, March 22, 2017
pr. Ispytateley, 2к1А, Sankt-Peterburg, Russia, 197343

Catkin cup (Ciboria amentacea) mushrooms growing under alder trees in Udelny Park. Saint Petersburg, Russia, March 22, 2017
pr. Ispytateley, 2к1А, Sankt-Peterburg, Russia, 197343

Group of catkin cup (Ciboria amentacea) mushrooms under alder trees in Udelny Park. Saint Petersburg, Russia, March 22, 2017
al. Pavla Sadyrina, Sankt-Peterburg, Russia, 197341

Catkin cup (Ciboria amentacea) mushrooms under alder trees in Udelny Park. Saint Petersburg, Russia, March 22, 2017
al. Pavla Sadyrina, Sankt-Peterburg, Russia, 197341

Catkin cup (Ciboria amentacea) mushrooms on a stump in area of Blizhnie Dubki near Lisiy Nos, west from Saint Petersburg. Russia, March 31, 2017
Polyanskaya dor., g. Sankt-Peterburg, Russia, 197755

Catkin cup (Ciboria amentacea) mushrooms on roadside near Kavgolovskoe Lake. North from Saint Petersburg, Russia, May 3, 2017
Novyy per., Kavgolovo, Leningradskaya oblast', Russia, 188667

Catkin cup (Ciboria amentacea) mushrooms taken from roadside near Kavgolovskoe Lake. North from Saint Petersburg, Russia, May 3, 2017

AI-generated summary of observations

In Leningrad Oblast and north-western Russia, observations of the fungus Ciboria amentacea were made in various locations under alder trees. The mushrooms were found on rotting leaves, alder catkins, and stumps from March to May 2017. Specific locations included Lavriki, Morskaya, Udelny Park in Saint Petersburg, and areas near Kavgolovskoe Lake. The fungi grew individually or in clusters under alder bushes and trees, often on rotten leaves or directly on the catkins. Similar observations were made in different parts of the region, indicating a widespread presence of Ciboria amentacea in these areas during the spring season. The fungus was also found on roadside areas, suggesting it can thrive in various environments with suitable host material.

Comments

• Search of mushroom species for given keywords "Ciboria amentacea" was done through catalogueoflife.org.
• Attributes of the species were taken from catalogueoflife.org.
• There is a Wikipedia article about this mushroom.

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Acknowledgements

Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.

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