Tricholoma pessundatum

*Tricholoma pessundatum*
Tricholoma pessundatum
Mycological characteristics
	Gills on hymenium
	Cap is convex
	Hymenium is adnexed or free
	Stipe is bare
	Spore print is white
	Ecology is mycorrhizal
	Edibility is poisonous or can cause allergic reactions

Tricholoma pessundatum
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Agaricales
Family:	Tricholomataceae
Genus:	Tricholoma
Species:	T. pessundatum
Binomial name
	Tricholoma pessundatum; (Fr.) Quél. (1872)
Synonyms
	Agaricus pessundatusFr. (1821); Gyrophila equestris var. pessundata(Fr.) Quél. (1886); Gyrophila pessundata(Fr.) Quél. (1888);

Last updated November 12, 2025

Tricholoma pessundatum is a mushroom of the agaric genus Tricholoma .

Taxonomy

First described as Agaricus pessundatus by Elias Magnus Fries in 1821, it was transferred to the genus Tricholoma by Lucien Quélet in 1872.^[2]

Description

The orangish cap is up to 18 centimetres (7 in) across, with a lighter margin, and is viscid when wet. The gills are white but develop stains and vary in attachment. The stem is up to 14 cm (5+1⁄2 in) long. The spore print is white.^[3]

It has a sour meal odor.^[4]

Similar species

A very similar species to the European mushroom is Tricholoma muricatum , which differs only in microscopic details.^[5]

Toxicity

It contains toxins which can cause severe gastrointestinal upset.^[4]

References

↑ "Tricholoma pessundatum (Fr.) Quél. :77, t. 95, 1872". MycoBank. International Mycological Association. Retrieved 2013-03-23.
↑ Quélet L. (1872). "Les Champignons du Jura et des Vosges". Mémoires de la Société d'Émulation de Montbéliard (in French). 5 (2): 43–332 (see p. 77).
↑ Arora, David (1986) [1979]. Mushrooms Demystified: A Comprehensive Guide to the Fleshy Fungi (2nd ed.). Berkeley, CA: Ten Speed Press. p. 185. ISBN 978-0-89815-170-1.
1 2 Miller Jr., Orson K.; Miller, Hope H. (2006). North American Mushrooms: A Field Guide to Edible and Inedible Fungi. Guilford, CN: FalconGuide. p. 127. ISBN 978-0-7627-3109-1.
↑ Trudell, Steve; Ammirati, Joe (2009). Mushrooms of the Pacific Northwest. Timber Press Field Guides. Portland, OR: Timber Press. p. 105. ISBN 978-0-88192-935-5.

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[urlMycoBank:_Tricholoma_pessundatum-1] "Tricholoma pessundatum (Fr.) Quél. :77, t. 95, 1872". MycoBank. International Mycological Association. Retrieved 2013-03-23.

[Quélet_1872-2] Quélet L. (1872). "Les Champignons du Jura et des Vosges". Mémoires de la Société d'Émulation de Montbéliard (in French). 5 (2): 43–332 (see p. 77).

[Arora1986-3] Arora, David (1986) [1979]. Mushrooms Demystified: A Comprehensive Guide to the Fleshy Fungi (2nd ed.). Berkeley, CA: Ten Speed Press. p. 185. ISBN 978-0-89815-170-1.

[Miller_2006-4] 1 2 Miller Jr., Orson K.; Miller, Hope H. (2006). North American Mushrooms: A Field Guide to Edible and Inedible Fungi. Guilford, CN: FalconGuide. p. 127. ISBN 978-0-7627-3109-1.

[:0-5] Trudell, Steve; Ammirati, Joe (2009). Mushrooms of the Pacific Northwest. Timber Press Field Guides. Portland, OR: Timber Press. p. 105. ISBN 978-0-88192-935-5.

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