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Agrocybe praecox – Spring fieldcap

Synonyms: Agaricus britzelmayrii, Agaricus candicans, Agaricus gibberosus, Agaricus praecox, Agaricus sphaleromorphus, Agaricus togularis, Agrocybe gibberosa, Agrocybe sphaleromorpha, Conocybe togularis, Dryophila praecox, Hylophila praecox, Hylophila togularis, Naucoria praecox, Pholiota gibberosa, Pholiota praecox, Pholiota sphaleromorpha, Pholiota togularis, Pholiotella gibberosa, Pholiotina togularis, Togaria praecox, Togaria sphaleromorpha, Togaria togularis.

Common name: spring fieldcap.

Russian names: Polevik ranniy, Poliovka rannyaya, Agrotsibe rannyaya, Cheshuychatka rannyaya.

Extract from Wikipedia article: Agrocybe praecox is a species of brown-spored edible mushroom which appears early in the year in woods, gardens and fields. According to modern taxonomic analysis it is just one of a cluster of closely similar species which are often referred to as the Agrocybe praecox complex. It is found in Europe, North Africa and North America.

AI-generated description

Agrocybe praecox is a species of mushroom that grows in fields, meadows, and along roadsides. In St. Petersburg, Leningrad Oblast, and north-western Russia, it typically fruits from May to July, often in association with grasses and other herbaceous plants. The cap is 2-5 cm in diameter, bell-shaped to convex, and light brown to yellowish-brown in color. The gills are crowded, free, and pale brown. It is a relatively common species in the region, found in a variety of habitats, including urban parks and rural areas.

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

Spring fieldcap mushroom (Agrocybe praecox) on wood chips in Sosnovka Park. Saint Petersburg, Russia, June 11, 2017
Unnamed Road, Sankt-Peterburg, Russia

Spring fieldcap mushroom (Agrocybe praecox) in Sosnovka Park. Saint Petersburg, Russia, June 11, 2017
ul. Zhaka Dyuklo, 67, Sankt-Peterburg, Russia, 194214

Spring fieldcap mushroom (Agrocybe praecox) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 13, 2017
Unnamed Road, Sankt-Peterburg, Russia

Spring fieldcap mushroom (Agrocybe praecox) on a tree utilization site on mulch in Sosnovka Park. Saint Petersburg, Russia, June 13, 2017
Unnamed Road, Sankt-Peterburg, Russia

Group of spring fieldcap mushroom (Agrocybe praecox) on a tree utilization site on mulch in Sosnovka Park. Saint Petersburg, Russia, June 13, 2017
Unnamed Road, Sankt-Peterburg, Russia

Spring fieldcap mushrooms (Agrocybe praecox) near Dibuny, north-west from Saint Petersburg, Russia, June 14, 2017
Unnamed Road, Pesochnyy, Sankt-Peterburg, Russia

Spring fieldcap mushrooms (Agrocybe praecox) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 18, 2017
Unnamed Road, Sankt-Peterburg, Russia

Masses of spring fieldcap mushrooms (Agrocybe praecox) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 18, 2017
Unnamed Road, Sankt-Peterburg, Russia

Spring fieldcap mushroom (Agrocybe praecox) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 25, 2017
Unnamed Road, Sankt-Peterburg, Russia

Spring fieldcap mushroom (Agrocybe praecox) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, June 29, 2017
Unnamed Road, Sankt-Peterburg, Russia

Spring fieldcap mushroom (Agrocybe praecox)(?) on wood chips in Sosnovka Park. Saint Petersburg, Russia, July 1, 2017
Unnamed Road, Sankt-Peterburg, Russia

Spring fieldcap mushrooms (Agrocybe praecox) on wood chips in Sosnovka Park. Saint Petersburg, Russia, May 30, 2019

Young spring fieldcap mushrooms (Agrocybe praecox) on a tree utilization site in Sosnovka Park. Saint Petersburg, Russia, May 30, 2019

Spring fieldcap mushrooms (Agrocybe praecox) on railroad side near Orekhovo, north from Saint Petersburg. Russia, May 31, 2019
Unnamed Road, Orekhovo, Leningradskaya oblast', Russia, 188731

Side view of spring fieldcap mushrooms (Agrocybe praecox) near Orekhovo, north from Saint Petersburg. Russia, May 31, 2019
Unnamed Road, Orekhovo, Leningradskaya oblast', Russia, 188731

AI-generated summary of observations

In Leningrad Oblast and north-western Russia, Agrocybe praecox was observed growing on various substrates, including wood chips, mulch, and tree utilization sites in Sosnovka Park, Saint Petersburg. The fungus was found to fruit from May to July, with multiple observations recorded in June 2017 and May-July 2019. The mushrooms were often found in groups or masses, particularly on tree utilization sites. Additionally, they were observed near Dibuny and Orekhovo, north-west and north of Saint Petersburg, respectively, including along railroad sides. The fungus appeared to thrive in these environments, with young and mature specimens documented over the observation period. Overall, Agrocybe praecox demonstrated a preference for disturbed or managed areas with abundant organic matter.

Comments

• Search of mushroom species for given keywords "Agrocybe praecox" was done through catalogueoflife.org.
• Selection of a particular species from the list of 7 species was performed automatically.
• 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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