cyanoxantha (Charcoal Burner) — Species | WeMush Taxonomy

cyanoxantha

Charcoal Burner

Russula cyanoxantha, commonly known as the Charcoal Burner, is a distinctive and highly regarded basidiomycete in the family Russulaceae. Morphologically, it is noted for its extreme variability in cap color—ranging from lilac, purple, and violet to olive-green and charcoal-grey—often blending these hues in a watercolor-like appearance. Uniquely among the genus Russula, R. cyanoxantha possesses 'lardaceous' or greasy gills that are flexible and soft to the touch, rather than brittle and crumbling like those of its congeners. This species is strictly ectomycorrhizal, forming symbiotic relationships with the roots of broadleaf trees (particularly Fagus and Quercus) and occasionally conifers.

Edibility: Choice edible. Considered one of the best culinary species within the genus Russula. The flesh is firm, white, and retains a pleasant texture when cooked. It has a mild, nutty flavor. Unlike many other mushrooms, it does not become slimy. It is excellent sautéed, in stews, or grilled. Safety: While R. cyanoxantha is safe, it belongs to a genus containing species that cause gastrointestinal distress (e.g., Russula emetica). The primary safety check for Russulas is the 'taste test' (a small nibble on the tongue tip, then spit out)—R. cyanoxantha is mild, whereas toxic species are acrid or peppery. However, the most reliable identification feature for this specific species is the flexible, non-brittle gills.

Habitat: Deciduous and mixed woodlands. It shows a strong preference for beech (Fagus) and oak (Quercus) forests, though it can occasionally be found under spruce or pine.. Substrates: Soil (terrestrial), Leaf litter (growing from underlying soil). Conditions: Prefers moist, well-drained acidic to neutral soils in temperate climates.. Season: Late Spring to late Autumn (typically June to November in the Northern Hemisphere).

Difficulty: EXPERT

Growth: slow

Contam Risk: high

Cultivation Suitability

Preferred Substrates

Living tree roots (Fagus/Quercus)

Forest soil

Leaf litter (in association with host trees)

Distribution

Native: Europe (widespread and common), North America (widely reported, though genetic analysis suggests cryptic species complexes), Asia (temperate regions). One of the most common and widespread Russula species in European woodlands.

Known Strains (0)

No strains cataloged yet for this species.

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