Butyriboletus regius

Butyriboletus regius
Butyriboletus regius in Austria
Scientific classification
Domain: Eukaryota
Kingdom: Fungi
Division: Basidiomycota
Class: Agaricomycetes
Order: Boletales
Family: Boletaceae
Genus: Butyriboletus
Species:
B. regius
Binomial name
Butyriboletus regius
(Krombh.) D.Arora & J.L.Frank (2014)
Synonyms
  • Boletus regius Krombh. (1832)
  • Boletus appendiculatus var. regius Konr.
  • Boletus subtomentosus ssp. cerasinus Martin
Butyriboletus Regius
Mycological characteristics
Pores on hymenium
Cap is convex
Hymenium is adnexed
Stipe is bare
Ecology is mycorrhizal
Edibility is choice

Butyriboletus regius (formerly Boletus regius), commonly known as the royal bolete or red-capped butter bolete, is a basidiomycete fungus of the genus Butyriboletus found in China and Europe. B. regius has a pink cap, yellow flesh, and a reticulate pattern on the stem. Harry D. Thiers described a similar mushroom from California as B. regius, though it is not the same species. B. regius in Europe does not stain when exposed to air, or stains weakly, but the California species stains blue. Both European and California species are considered choice edibles.

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