Candolleomyces candolleanus

Psathyrella candolleana 060801wa

Candolleomyces candolleanus is a species of fungus belonging to the family Psathyrellaceae. It was previously known under the genus Psathyrella but was reclassified into the new genus Candolleomyces due to molecular phylogenetic studies. This species is named in honor of the Swiss botanist Augustin Pyramus de Candolle, reflecting its historical significance in mycological taxonomy.

Description

Candolleomyces candolleanus is characterized by its delicate, ephemeral fruiting bodies. The cap is typically 2 to 5 cm in diameter, initially bell-shaped before becoming more convex or broadly umbonate with age. The surface of the cap is smooth, with a pale brown to dark brown coloration, often becoming lighter towards the margin. The gills are closely spaced, free, or adnexed, and initially light gray, becoming dark brown as the spores mature. The stipe (stem) is slender, hollow, and bears no ring. It is usually white to pale brown, with a smooth texture.

Habitat and Distribution

Candolleomyces candolleanus is saprotrophic, decomposing dead organic matter. It is commonly found in grassy areas, gardens, and along roadsides, preferring moist, nutrient-rich soils. This species has a widespread distribution, occurring in both North America and Europe. It tends to fruit in small groups or clusters from late spring to autumn, following periods of rain.

Taxonomy

The taxonomy of Candolleomyces candolleanus has undergone significant changes over time. Initially classified within the genus Psathyrella, molecular studies have since placed it in the newly established genus Candolleomyces. This reclassification is part of a broader effort to refine fungal taxonomy based on genetic data, leading to a more accurate understanding of phylogenetic relationships within the Psathyrellaceae family.

Ecology

As a saprotroph, Candolleomyces candolleanus plays a crucial role in its ecosystem by breaking down dead organic material, thus contributing to nutrient cycling and soil health. It is often found in association with decaying wood, leaf litter, and other plant debris, indicating its preference for rich organic substrates.

Culinary and Medicinal Use

There is no documented culinary or medicinal use of Candolleomyces candolleanus. Like many members of the Psathyrellaceae family, it is considered inedible due to its small size, delicate nature, and potential confusion with toxic species.

Conservation

There are currently no specific conservation measures in place for Candolleomyces candolleanus. Its widespread distribution and saprotrophic lifestyle suggest that it is not under immediate threat. However, like many fungi, its habitat could be affected by environmental changes such as habitat destruction, pollution, and climate change.

Candolleomyces candolleanus
Mycological characteristics
	gills on hymenium