Extract from Wikipedia article: Tarzetta cupularis is a species of apothecial fungus belonging to the family Pyronemataceae. This is a species of northern Europe with occasional records from further south in Spain and Morocco. It also occurs in North America. It appears from spring to autumn as brown to cream-coloured flask-shaped cups up to 2 cm across and 2.5 cm tall in groups in damp woodland. The related Tarzetta catinus tends to be larger with a more open cup, but the two species can only be reliably distinguished microscopically: by the shape of the spores (those of T. cupularis being narrower) and the paraphyses (those of T. cupularis lacking the distinctive lobed tips of T. catinus).
Toothed Cup fungus (Tarzetta cupularis) in Sosnovka Park. Saint Petersburg, Russia, June 22, 2017
Toothed cup mushroom (Tarzetta cupularis) under a broadleaf tree in Gardens of Polytechnic Institute. Saint Petersburg, Russia, August 19, 2017 Pamyatnik Politekhnikam, Sankt-Peterburg, Russia, 195251
Toothed cup fungus (Tarzetta cupularis) on rich soil under small pines in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017 Unnamed Road, St Petersburg, Russia, 194223
Toothed cup fungus (Tarzetta cupularis) on rich soil under young pines in Sosnovka Park. Saint Petersburg, Russia, September 16, 2017 Unnamed Road, St Petersburg, Russia, 194223
Toothed cup fungus (Tarzetta cupularis) under big trees in West Kotlin Nature Reserve in Kronstadt. Saint Petersburg, Russia, September 2, 2018 Fort "Shants", Kronshtadt, Sankt-Peterburg, Russia, 197761
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