Inocybe cookei Bres. Knolliger Risspilz, Inocbye de Cooke, Straw Fibrecap. Cap 2–5cm across, conical or bell-shaped then flattened with a prominent umbo, margin cracking, ochre, covered in long fibrous fibres. Stem 30–60 x 4–8mm, whitish with ochre flush, bulb marginate. Flesh whitish then straw-yellow. Taste mild, smell slight. Gills adnexed, whitish then pale cinnamon. Cheilocystidia thin-walled, pyriform and non-encrusted. Spore print snuff-brown. Spores smooth, bean-shaped, 7–8 x 4–5µ. Habitat mixed woods. Season summer to late autumn. Occasional. Poisonous. Distribution, America and Europe.