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Strobilomyces floccopus
Cap: 3-15 cm; convex becoming broadly convex in age; dry; covered with coarse, black, woolly scales over a whitish to grayish base color; the margin frequently with hanging remnants of a partial veil. Pore Surface: Whitish, soon becoming gray and finally black; bruising reddish, then black; pores angular; tubes to 1.5 cm. Stem: 4-12 cm long; 1-2.5 cm thick; more or less equal; grayish to blackish; shaggy; sometimes reticulate above; sometimes with an ephemeral ring or ring zone; solid. Flesh: Whitish throughout, turning pinkish to red when exposed, then blackening over the course of an hour. Odor and Taste: Not distinctive. Chemical Reactions: Flesh pale brownish yellow with ammonia, reddish with KOH, and bluish gray with iron salts. Spore Print: Blackish brown to black. Microscopic Features: Spores 9.5-15 x 8.5-12 µ; round, nearly round, or nearly elliptical; with ornamentation forming a completle reticulum.
Mycorrhizal with hardwoods, especially oaks; common; summer and fall; primarily distributed in eastern North America but also recorded from the Southwest.
Found growing near Abrams Creek in the Great Smokey Mountains National Park. Approx. 3" dia. grey mushroom. Growing alone. No others in the area.
S. floccopus is the initial ID I'd give to this such bolete, very few others that resemble it. Nice spot! I'd love to see one of these up close. :)