About Retiboletus griseus (Frost) Manfr.Binder & Bresinsky
Retiboletus griseus has a grayish convex cap that measures 4–10 centimetres (1+1⁄2–4 inches) wide, with a texture that is either soft or leathery. Its stem is yellowish, growing 4–10 cm tall and 1–3 cm (1⁄2–1+1⁄4 in) thick. The flesh of the mushroom is whitish, and can turn tannish when exposed or stained. It produces an olive brown spore print. This species grows under oak trees in eastern North America, and can be found there from June through September. Retiboletus griseus is edible, but is frequently infested with worms.
