Polyozellus

Polyozellus is a genus of fungi within the family Thelephoraceae. It is known for its distinctive species, particularly Polyozellus multiplex, which is often referred to as the blue chanterelle or the black chanterelle. This genus is characterized by its unique fruiting bodies that are dark in color, ranging from deep blue to black, and its growth in coniferous forests in certain parts of the world, including North America and Asia.

Description

The fungi of the genus Polyozellus are notable for their gregarious fruiting bodies that form compact clusters. The caps are deeply wrinkled or folded, and the coloration is typically a striking dark blue to almost black. The underside of the cap features ridges or folds rather than the gills found in many other mushroom species. These ridges extend down the stipe (stem) to the base, which is usually embedded in the forest floor's litter.

Habitat and Distribution

Polyozellus species are primarily found in coniferous forests, thriving in the organic matter-rich soil. They have a symbiotic relationship with the roots of conifer trees, forming mycorrhizal associations that benefit both the fungi and their plant hosts. This genus has a circumboreal distribution, with occurrences in North America, particularly in the Rocky Mountains and the Pacific Northwest, as well as in parts of Asia, including Korea, Japan, and Siberia.

Taxonomy

The taxonomy of Polyozellus has been subject to revision. Initially, it was classified within the Boletaceae family due to its morphological characteristics. However, molecular studies have since placed it in the Thelephoraceae family, which is known for its diverse group of ectomycorrhizal fungi. The most well-known species within this genus is Polyozellus multiplex, but ongoing research may reveal more about the diversity and classification of these fungi.

Culinary and Medicinal Uses

While Polyozellus multiplex is considered edible, it is not widely sought after due to its rarity and unique flavor profile, which some find to be slightly bitter. In some cultures, particularly in Korea and parts of North America, it is collected for culinary use. There are also reports of medicinal properties, including antioxidant and antimicrobial activities, although scientific studies in these areas are limited.

Conservation

Due to its specific habitat requirements and the declining health of coniferous forests in some regions, Polyozellus species may be susceptible to habitat loss. Conservation efforts are important to ensure the sustainability of these unique fungi and their ecosystems.

Polyozellus
Mycological characteristics
	no distinct cap
	hymenium attachment is not applicable
	lacks a stipe
	ecology is mycorrhizal
	edibility: edible