Boletus regineus
| Boletus regineus | |
|---|---|
| From Little River (Mendocino County), California | |
| Scientific classification | |
| Domain: | Eukaryota |
| Kingdom: | Fungi |
| Division: | Basidiomycota |
| Class: | Agaricomycetes |
| Order: | Boletales |
| Family: | Boletaceae |
| Genus: | Boletus |
| Species: | B. regineus |
| Binomial name | |
| Boletus regineus D.Arora & Simonini (2008) | |
| Boletus regineus | |
|---|---|
| Pores on hymenium | |
| Cap is convex | |
| Hymenium is adnate | |
| Stipe is bare | |
| Spore print is olive | |
| Ecology is mycorrhizal | |
| Edibility is choice | |
Boletus regineus, commonly known as the queen bolete, is an edible and highly regarded fungus of the genus Boletus that inhabits southwestern North America. It was considered a variant of the similarly edible B. edulis for many years until declared a unique species in 2008. Phylogenetic analysis has shown B. regineus as a member of a clade, or closely related group, with B. subcaerulescens, Gastroboletus subalpinus, B. pinophilus, B. fibrillosus, and B. rex-veris.
The cap is 5–18 cm (2–7 in) wide, convex then flat, brown with a whitish dusting when young. The stalk is 5–15 cm long, 3–6 cm wide, clavate then equal, and whitish tan.