Xylaria carpophila - Mushroom in the shape of an irregular, curled, cambered, reminiscent of the winding wires, most sharpened at the top. The colors gray, black and gray, black, the upper part dusted whitish, whitish-gray by conidia (sponges asexual).
White, hard, corky and elastic flesh.
Occurrence: In deciduous beech forests, grows on old beech fruit casing. Often hidden under the leaves, it is hardly noticeable.
Value: Unaffected fungus.