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#5
Amethyst Deceiver
Laccaria amethystina, or the Amethyst Deceiver, is a visually striking fungus found across Europe, North America and parts of Asia, flourishing in both deciduous and coniferous forests. It typically forms mycorrhizal associations with trees, benefiting nutrient exchange. The most notable feature of this species is its vibrant violet to purple colouration, which is vivid in younger specimens. The cap measures 2 to 6 cm, beginning convex and flattening with age, while the widely spaced gills and slender stem share the same violet hue. However, the fungus fades significantly as it ages, leading to its deceptive appearance. While L. amethystina is considered edible, it is not widely sought-after due to its small size and potential to absorb heavy metals like arsenic from contaminated soils. Ecologically, it plays a vital role in forest ecosystems, supporting tree health through its mycorrhizal relationships.
Image: Ailsa Carlaw
Three interesting facts -
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Colour Fades: The vivid purple of Laccaria amethystina fades with age and weather, often leading to misidentification, hence the nickname "Amethyst Deceiver."
Heavy Metal Accumulator: This fungus can accumulate heavy metals like arsenic from the soil, which has implications for both its edibility and the health of the ecosystem it inhabits.
Mycorrhizal Role: L. amethystina forms symbiotic relationships with tree roots, enhancing nutrient exchange and contributing to forest ecosystem health.