Cortinarius (Myxacium) vibratilis (Fr.) Fr. (illustrated 40% life size) Cap 2–5cm across, hemispherical then convex to domed; orange, slightly hygrophanous, lighter when dry, darker when wet; glutinous. Stem 40–70×4–10mm, often swollen at the base, but sometimes tapering and appearing root-like; white, discolouring orangey in places, sometimes showing a ring zone; glutinous. Flesh whitish or a touch ochre; taste very bitter, smell slight. Gills adnate; pallid reddish-ochre, then more cinnamon. Spores 6–8.4×4–5¼, elliptical, roughened. Spore print rusty brown. Habitat in coniferous or deciduous woods; autumn. Uncommon. Not edible. Note the small size and very bitter taste help to identify this species.