Synonyms: Agaricus inamoenus, Gyrophila inamoena, Gyrophila sulphurea.
Common name: gassy knight.
Extract from Wikipedia article: Tricholoma inamoenum is a mushroom of the agaric genus Tricholoma found through the Northern Hemisphere, particularly under conifers. It is poisonous, and is characterized by an unpleasant odor resembling coal gas or tar. • Analysis of the volatile compounds emanating from fresh sporocarps using solid phase microextraction (SPME) showed the odor compounds responsible for the coal tar odor of this mushroom are 1-octen-3-ol and indole.
Basque: Kirats-ziza zuri, Estonian: Haisev heinik, Finnish: Löyhkävalmuska, German: Lästiger Ritterling, Polish: Gąska nieprzyjemna, Swedish: Luktmusseron, Welsh: Marchog anhyfryd.
Tricholoma inamoenum is a species of fungus that grows in association with trees, particularly conifers. In St. Petersburg and Leningrad Oblast, it is found in pine and spruce forests, typically fruiting from August to October. The cap is 3-6 cm in diameter, grayish-brown to brown, and often has a distinctive umbo. The stem is white to pale yellow, and the flesh has a mild to slightly bitter taste. In north-western Russia, Tricholoma inamoenum is considered a rare species, but it can be locally abundant in suitable habitats, such as sandy soils and moss-covered forests.
Gassy knight mushrooms (Tricholoma inamoenum(?)) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Montgomery County, Texas, January 31, 2025
Side view of gassy knight mushrooms (Tricholoma inamoenum(?)) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Montgomery County, Texas, January 31, 2025
Section of gassy knight mushrooms (Tricholoma inamoenum(?)) on Lone Star Hiking Trail near Pole Creek in Sam Houston National Forest. Montgomery County, Texas, January 31, 2025
Spores of Tricholoma inamoenum(?) mushrooms collected in Sam Houston National Forest. Montgomery County, Texas, January 31, 2025Observations of Tricholoma inamoenum in Leningrad Oblast and north-western Russia revealed that the fungus grows in various locations near Saint Petersburg. It was found near Lembolovo, Kavgolovskoe Lake, Shchuchye Lake, and in areas of Lisiy Nos - Olgino and Lisiy Nos - Morskaya. The mushrooms typically grow in spruce forests, with sightings recorded between August 13 and September 26. Multiple observations were made in the same locations over different years, such as near Lembolovo in 2016 and 2017. The fungus was often found in groups, with some observations featuring pairs or larger clusters of mushrooms. The growth patterns and habitats of Tricholoma inamoenum in this region appear to be consistent with those of other Tricholoma species, preferring wooded areas with specific tree species.
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