CAP: (4-12 cm) wide, convex, becoming broadly convex; surface dry, dull, yellow when young, becoming brown as it matures, staining very dark brown with KOH; flesh yellow, fading to pale yellow in age, blueing when cut; blued surface staining yellow with KOH; odor and taste not distinctive.

PORE SURFACE: dark brown when young, paler in age, staining blackish blue when bruised, very slowly fading to dull brownish orange; pores very small, circular to angular, 2-3 per mm.

STALK: (4-10 cm) long, (1-2 cm) thick, nearly equal, solid, brownish pruinose over a dull whitish or pale yellow ground color with olive tints, becoming dark brown when handled.

SPORE PRINT: olive-brown.

MICROSCOPIC FEATURES: spores 9-12 x 3-4 μm, elliptic, smooth, pale brown.

FRUITING: solitary, scattered, or in groups on the ground under oak; July-October; occasional.

EDIBILITY: unknown.

From Mushrooms of Northeastern North America Alan E. Bessette, Arleen R. Bessette, & David W. Fischer  Copright © 1997 Syracuse University, ISBN 0-8156-0388-6