Collybia peronata (Bolt. ex Fr.) Kummer syn. Marasmius peronatus (Bolt. ex Fr.) Fr. syn. M. urens (Bull. ex Fr.) Fr. Brennender Rübling Marasme poivré, Marasme brûlant Wood Woollyfoot. Cap 3–6cm across, convex then flattened, often with a low, broad umbo, tan to darker brown, becoming wrinkled and leathery with age. Stem 30–60 x 3–6mm, yellowish covered in long dense white or yellowish woolly hairs at the base and lower stem. Flesh whitish tinged yellowish. Taste acrid. Gills adnexed to free, crowded, cream to yellowish brown or tan. Spore print white. Spores elongate pip-shaped, 7–9 x 3–4m. Habitat in leaf litter of deciduous or occasionally coniferous woods. Season late summer to late autumn. Very common. Not edible due to the acrid peppery taste. Distribution, America and Europe.