About Boletus regineus D.Arora & Simonini
Boletus regineus, commonly called the queen bolete, is an edible, highly-prized fungus belonging to the genus Boletus, found in southwestern North America. For many years, it was classified as a variant of the similarly edible species Boletus edulis, before it was formally described as a distinct species in 2008. Phylogenetic analysis has confirmed that B. regineus is part of a clade (a group of closely related organisms) that also includes B. subcaerulescens, Gastroboletus subalpinus, B. pinophilus, B. fibrillosus, and B. rex-veris. The cap of the fungus measures 5–18 cm (2–7 inches) across; it is convex when young and becomes flat with age, and is brown with a whitish powdery coating when young. The stalk is 5–15 cm long and 3–6 cm thick; it is club-shaped when young and becomes uniformly thick as it matures, and is colored whitish tan.
