Deceiving Knight
Tricholoma sejunctum
Tricholoma sejunctum is a mushroom that appears across much of the Northern Hemisphere and is associated with pine forests.
Photo: iNaturalist: (c) Federico Calledda, some rights reserved (CC BY-NC), uploaded by Federico Calledda
Taxonomy & Classification
Kingdom
Fungi
Phylum
Basidiomycota
Class
Agaricomycetes
Order
Agaricales
Family
Tricholomataceae
Genus
Tricholoma
Deceiving Knight belongs to the family Tricholomataceae, order Agaricales, within the Agaricomycetes class.
Species Profile
Tricholoma sejunctum is a mushroom that appears across much of the Northern Hemisphere and is associated with pine forests.
The Deceiving Knight faces severe population declines due to widespread habitat destruction and degradation of its specialized forest ecosystems. Climate change is altering the delicate soil chemistry and mycorrhizal relationships essential for this fungus, while pollution and forest fragmentation further threaten remaining populations.
Key Facts
Habitat & Distribution
Mixed deciduous and coniferous forests, particularly beech, oak, and pine woodlands with rich, well-drained soils. Forms essential mycorrhizal associations with tree roots in temperate forest ecosystems across Europe and North America.
Threats
IUCN Red List: Critically Endangered
The Deceiving Knight faces severe population declines due to widespread habitat destruction and degradation of its specialized forest ecosystems. Climate change is altering the delicate soil chemistry and mycorrhizal relationships essential for this fungus, while pollution and forest fragmentation further threaten remaining populations.
Climate change impacts on soil chemistry
Disruption of mycorrhizal partnerships
Habitat loss and forest degradation
Air and soil pollution
Forest fragmentation
Community Sightings
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Sources & Attribution
How to Cite
IUCN: IUCN (2025). The IUCN Red List of Threatened Species. Version 2025-1. Available at: https://www.iucnredlist.org. doi:10.2305/IUCN.UK.2025-1.RLTS
GBIF: GBIF.org (2025). GBIF Home Page. Available at: https://www.gbif.org
This page: SpeciesRadar (2025). Deceiving Knight (Tricholoma sejunctum). SpeciesRadar: Intelligence for Earth's Biodiversity. Available at: https://speciesradar.org/species/deceiving-knight