Synonyms: Agaricus stiparophyllus, Tricholoma album, Tricholoma pseudoalbum.
Common name: chemical knight.
Russian name: Ryadovka chastoplastinkovaya.
Tricholoma stiparophyllum is a species of fungus that belongs to the family Tricholomataceae. It has been found in St. Petersburg and Leningrad Oblast, typically growing in association with coniferous trees, particularly spruce and pine. In north-western Russia, it fruits from late summer to early autumn, often in moss-covered areas or undergrowth of boreal forests. The cap is 3-7 cm in diameter, convex to flat, with a brownish-gray to gray-brown color, and wavy or irregular margin. The gills are white to cream-colored, and the stipe is cylindrical, white to pale yellowish, and 4-8 cm tall.
Observations of Tricholoma stiparophyllum in Leningrad Oblast and north-western Russia reveal that the fungus grows in various locations near Saint Petersburg. On September 3, 2016, chemical knight mushrooms were found near Lisiy Nos, south of Saint Petersburg. Similar sightings occurred on September 12 and October 19, 2016, in the same area, but west of the city. In 2017, young specimens were discovered near Kuzmolovo, north of Saint Petersburg, on September 3. Further observations were made in Sosnovka Park and the Park of Polytechnic Institute in Saint Petersburg on September 16 and 19, respectively. Additional sightings took place in Blizhnie Dubki area near Lisiy Nos on September 26, 2017. These findings suggest that Tricholoma stiparophyllum is relatively common in the region, with a growth period spanning from September to October. The fungus appears to thrive in various habitats, including parks and wooded areas.
Russian web-forums Planeta Gribov, V Kontakte, and Griby Sredney Polosy for learning names of local mushrooms.
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