Tricholoma atrosquamosum

Tricholoma atrosquamosum 186463

Tricholoma atrosquamosum, commonly known as the chequered knight or pepper-scented tricholoma, is a species of mushroom belonging to the genus Tricholoma within the family Tricholomataceae. This fungus is notable for its distinctive dark squamules on the cap and its peppery taste, which makes it a unique species among the tricholomas.

Description

Tricholoma atrosquamosum features a cap that can range from 4 to 10 cm in diameter, initially convex before flattening out with age, often with a slight umbo at the center. The cap's surface is characterized by its dark grey to black squamules (scale-like structures) on a paler grey background, giving it a chequered appearance. The gills are white, becoming spotted with age, and are emarginate, attaching to the stem with a slight notch. The stem, ranging from 4 to 10 cm in height and 1 to 2 cm in thickness, is white and can either be smooth or bear small scales.

The flesh of the mushroom is white and does not change color upon exposure to air. It has a distinctive peppery taste and a mild smell, which has been described as reminiscent of cucumber or radish. This peppery flavor is a key identifying feature of the species.

Habitat and Distribution

Tricholoma atrosquamosum is a mycorrhizal fungus, forming symbiotic relationships with various species of trees, particularly with conifers and deciduous trees. It is found in both coniferous and mixed forests, often in mossy areas. The species is widely distributed across Europe and has been reported in some parts of North America. It fruits from late summer to late autumn.

Edibility

The edibility of Tricholoma atrosquamosum is a subject of debate. While it is not considered toxic, its strong peppery taste can make it unpalatable to some. In some regions, it is collected and eaten, often being cooked to reduce its peppery flavor. However, due to its taste and the potential confusion with other, toxic species of Tricholoma, it is not widely regarded as a choice edible mushroom.

Conservation

There are no specific conservation concerns for Tricholoma atrosquamosum at present. It is relatively widespread and not considered rare, although like many fungi, it could be susceptible to changes in forest management practices and habitat loss.

See Also

• Mycorrhiza
• Tricholoma
• Edible mushrooms

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