Rhodocollybia butyracea (Bull.:Fr.) Lennox |
The cap is with variable shades: dark reddish brown, paler towards margin, ivory when dry, convex then expanded, with a sharp central umbo; its margin is striate when moist. The cap surface is smooth, greasy to the touch. The stem is hollow, swollen towards base, without ring. The flesh is yellowish white, brown when damp, unchanging; its taste is mild; the odour is not distinctive or of rancid butter; its texture is fibrous. The gills are white, adnate, crowded (nb of gills per 90° ~ 20 ). The spore print is white. This species is saprophytic. It grows on the ground, in broad-leaved and coniferous woods, on a rather acid soil, with beech, fir, spruce, larch, oak, birch. The fruiting period takes place from July to December.
Chemical tests : none. Distinctive features : Variable colour, red-brown to ochre-buff cap, greasy to the touch, with an umbo; club-shaped stem with woolly mycelium base; white gills Rhodocollybia butyracea is frequent and very widely present in the forest of Rambouillet, and is very frequent, more generally speaking . | ||
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page updated on 14/01/18