English: Buttery collybia; Greasy Toughshank; Butter Cap.
Synonym: Collybia butyracea.
German: Butter Rübling; Kastanienrote Rübling.
Region: North America, Europe.
Use: edible, but unsubstantial.
MycologyThe cap of this mushroom is ± 6 cm across, convex or almost flat, smooth and moist when fresh, reddish-brown colour fading to cinnamon. The gills are either free from the stem, or narrowly attached, close to crowded, whitish to pinkish when ageing, with fine, jagged edges. The stem is up to 10 cm long and 1 cm thick, somewhat club-shaped, moist or dry. The flesh of this species is white. There is no distinctive odor or taste. The spores are pale yellowish, pale pinkish, or white. This species is saprobic, it decomposes litter from conifers, usually that of the genus Pinus, and occasionally hardwoods.