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Boletus chrysenteron

Boletus chrysenteron - Fungi species | sokos jishebi | სოკოს ჯიშები

Boletus chrysenteron

Pileus
Cap 4-9 cm broad, convex, becoming nearly plane in age; surface dry, tomentose, dark brown to olive brown, soon areolate, the exposed context pallid at the disc, pinkish near the margin; flesh white, thick, sometimes blueing when bruised; odor mild, taste acidic.

Hymenophore
Pores relatively large, 1-2 mm, yellow, olive-brown in age, typically bruising blue.

Stipe
Stipe 5-10 cm tall, 1.0-1.5 cm thick, dry, smooth to longitudinally ridged, yellowish, with reddish tints usually predominating at the base.

Spores
Spores 11.5-14.0 x 4-6 µm, smooth, elliptical to fusiform; spore print olive-brown.

Habitat
Solitary or in small groups in hardwood/conifer woods from early fall to mid-winter.

Edibility
Edible, of fair quality.

Comments
This drab member of the Boletus clan is recognized by a dark brown-brown to olive-brown areolate cap, and slow, not always consistent blueing of the tubes and cut flesh. Boletus truncatus is a closely related species which cannot be reliably told apart without a microscope although cracks in the cap context tend not to turn pink as in B. chrysenteron. To confirm an identification requires an examination of spores. In Boletus truncatus, as the name suggests, the spores are either blunt or truncate at one end, while in B. chrysenteron they are rounded. Another related species is Boletus zelleri, but it has a darker, less cracked cap at maturity, and a more uniformly red stipe.

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