A slender bolete with a dry, cracking, reddish-brown cap and a very long, reddish-brown stem covered in coarse, shaggy, pocketed ridges. It is mycorrhizal with oaks and other hardwoods in eastern North America. Its large spores carry deep longitudinal ribs, and DNA work moved it from Boletellus to Aureoboletus in 2016.
Edible but of low culinary value; soft, mildly flavored flesh (Wikipedia; Catalogue of Life). As with any bolete, avoid red-pored or blue-bruising look-alikes unless identified with certainty.
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Alone, scattered or in groups on the ground; mycorrhizal with oaks and other hardwoods, sometimes conifers (hemlock and pine are cited). Summer and fall.
Distribution
Eastern North America east of the Rocky Mountains, from eastern Canada, the Northeast and upper Midwest to the southeastern United States, Texas, Mexico and Central America; also southern Arizona. Also reported from Asia (Korea, Taiwan, Japan, Thailand) and Colombia.
Characteristics
Cap: 2-6 cm, convex; dry; dull reddish brown to pinkish brown; may crack and become sub-scaly. Pores: yellow becoming olive-yellow, not bruising; angular, 1-2 per mm; tubes up to 1.5 cm deep. Stem: 10-15 cm long, 1-2 cm thick, reddish brown, coarsely pocketed-reticulate and shaggy; base slightly sticky when fresh; basal mycelium white. Flesh: pale yellow, yellowish to reddish in the lower stem, unchanging. Spore print: olive. Spores: 16-20 x 8-12 µm, ellipsoid, with 10-16 deep longitudinal ribs.
