Boletus subcaerulescens

Boletus subcaerulescens is a basidiomycete fungus of the genus Boletus found in northeastern North America. The fruiting bodies are found associated with pine and spruce. The cap is up to 18 cm wide, convex to flat, and brown in color. The tubes are yellow and stain blue (later becoming brown) when bruised, while the flesh is white to buff and does not stain when cut. The stem is brown like the cap and has a light-colored reticulate texture.^[1][2]

Boletus subcaerulescens
Scientific classification
Kingdom:	Fungi
Division:	Basidiomycota
Class:	Agaricomycetes
Order:	Boletales
Family:	Boletaceae
Genus:	Boletus
Species:	B. subcaerulescens
Binomial name
Boletus subcaerulescens (E.A. Dick & Snell) Both, Bessette, & A.R. Bessette 2000[1]
Synonyms
Boletus edulis subsp. subcaerulescens E.A. Dick & Snell 1965 Boletus edulis f. subcaerulescens (E.A. Dick & Snell) Vassilkov 1966 Boletus separans var. subcaerulescens (E.A. Dick & Snell) A.H.Sm. & Thiers 1971

Boletus subcaerulescens Mycological characteristics
	Pores on hymenium
	Cap is convex
	Hymenium is adnexed
	Stipe is bare
	Spore print is olive-brown
	Ecology is mycorrhizal
	Edibility is unknown

The specific epithet is from Latin: sub- + caeruleus + -escens, literally "becoming dark blue beneath".

Phylogenetic analysis has shown B. subcaerulescens as a member of a clade, or closely related group, with B. pinophilus, B. regineus, B. rex-veris, B. fibrillosus, and Gastroboletus subalpinus.^[3]

See also

• List of Boletus species
• List of North American boletes