About Russula betularum Hora
The cap of Russula betularum ranges from convex to flattened, and often has a depression at its center. When the cap expands, its margin becomes furrowed and bears low warts. The cap measures 2–5 cm (0.8–2.0 in) in diameter, and its cuticle can be peeled completely off. Cap color varies from white to pale pink, deep pink, or even pale buff; it is most often white with a pale pink blush, and turns pale yellow ochre in the center. The stem is typically longer than the cap diameter, with a cylindrical or slightly club-shaped form. It is white and very fragile. The gills are also white and well spaced, and the spore print is white. The flesh is white and has a hot taste. Russula betularum may be confused with Russula fragilis (Pers.) Fr., which can be pale in color and grows in the same habitat. However, the cuticle of Russula fragilis can only be peeled three-quarters of the way off, it is usually darker at the center with purplish tones, and it has distinct serrations on its gill edges. Russula betularum grows in summer and early autumn. It is widespread across Britain, Europe, and Scandinavia, and is probably mycorrhizal with birch trees. It often grows in damp areas of woodlands.
