Synonyms: Ascophanus merdarius, Humaria merdaria, Peziza merdaria.
Pseudombrophila merdaria is a species of fungus in the family Pyronemataceae. It is a small, disc-shaped fungus that grows on dung, typically from herbivorous animals. In St. Petersburg and Leningrad Oblast, as well as north-western Russia, Pseudombrophila merdaria has been found to fruit in summer and autumn, often in moist, grassy areas with abundant dung deposits. The species is relatively rare in the region, but can be locally common in suitable habitats.
Observations of Pseudombrophila merdaria in Leningrad Oblast and north-western Russia reveal that the fungus grows on animal droppings. On June 14, 2017, cup fungi were found on roadside droppings near Dibuny, northwest of Saint Petersburg. The fungus was observed to be thriving in this environment, with multiple cups forming on a single dropping. Close-up observations showed the intricate details of the fungus's structure. The presence of Pseudombrophila merdaria on animal droppings suggests that it plays a role in decomposing organic matter in these areas. Further observations are needed to fully understand the habits and distribution of this fungus in north-western Russia. The specific conditions required for its growth, such as temperature and humidity, may also be worth investigating to gain a deeper understanding of this species' ecology.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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