Pluteus semibulbosus (Lasch apud Fr.) Gillet s. Lange Knolliger Dachpilz. Cap 1.5–5cm across, bell-shaped to obtusely convex, white tinged pale flesh-colour when moist, radiately wrinkled and as if powdered with mica flakes. Stem 20–30´3–7mm, bulbous, white. Flesh white. Gills white at first, later pink. Pleurocystidia thin-walled, hyaline, bottle-shaped. Spore print pink. Spores broadly ovate to subglobose, 6–7´5–5.5m. Cap cuticle of sphaeropedunculate cells. Habitat on rotting sawdust or wood of deciduous trees. Season autumn. Rare. Edibility unknown -avoid. Found In Europe.