It is easy to miss. In the shadowed understorey of a beech forest, the Blue-Black Webcap blends into the gloom. Its cap is a deep, sombre violet, almost black in low light. It is convex, with a smooth, dry surface that feels cool to the touch. As it ages, the centre may fade to a dull grey, but the margins retain their dark hue. It is not a cheerful fungus. It does not seek attention. It waits. The gills are attached to the stem and share the cap's violet tone, though they darken to a rusty brown as spores mature. This colour shift is subtle, often unnoticed until the mushroom is lifted from the moss. The stem is slender, fibrous, and coloured like the cap, though it may be streaked with lighter fibres. In young specimens, a delicate web of cottony threads—the cortina—stretches from the stem to the cap edge. It protects the developing gills, then tears and vanishes, leaving no trace. This fungus forms a symbiotic relationship with southern beech trees, particularly silver and red beech. The hyphae extend into the soil, gathering water and nutrients that the tree cannot reach. In exchange, the tree provides sugars produced by photosynthesis. It is a quiet trade, essential for the health of the forest. Without these fungi, the beech trees would struggle. The soil would be less fertile. The forest would be poorer. Blue-Black Webcaps are found in damp, shaded areas under beech canopy. They fruit in autumn, often singly or in small groups. They are not edible. Like many cortinarious fungi, they contain toxins that can cause severe gastrointestinal distress. They are best left alone. Their beauty is in their subtlety, not their flavour. Threats are minimal. The species is stable in its preferred habitat. However, it is sensitive to changes in moisture and soil structure. Logging, fire, or heavy grazing can disrupt the delicate mycelial networks beneath the forest floor. Recovery is slow. The fungi wait for the conditions to return. They do not rush. It carries on.