Retiboletus griseus
| Retiboletus griseus | |
|---|---|
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Boletales |
| Family: | Boletaceae |
| Genus: | Retiboletus |
| Species: | R. griseus |
| Binomial name | |
| Retiboletus griseus (Frost) Manfr. Binder & Bresinsky (2002) | |
| Synonyms | |
| Retiboletus griseus | |
|---|---|
| Pores on hymenium | |
| Cap is convex | |
| Spore print is yellow-brown | |
| Ecology is mycorrhizal | |
Retiboletus griseus, commonly known as the gray bolete, is a species of bolete fungus in the family Boletaceae. The species was first described scientifically in 1878 by American botanist Charles Christopher Frost. It was transferred to Retiboletus in 2002.
The grayish cap is convex, 4–10 centimetres (1+1⁄2–4 in) wide, and soft or leathery. The stem is yellowish, 4–10 cm tall and 1–3 cm (1⁄2–1+1⁄4 in) thick. The flesh is whitish and can stain tannish. The spore print is olive brown.
Lookalikes include R. vinaceipes, Tylopilus griseocarneus, T. variobrunneus, and Leccinum albellum.
It can be found under oak trees in eastern North America from June to September.