Gymnopilus luteus (Pk.) Hesler Cap 5-10cm across, convex, with an incurved margin; saffron yellow to buff-yellow, often a little darker at the center; dry, silky or minutely downy, or sometimes with minute woolly scales toward the middle. Gills adnexed, thin, close, moderately narrow; pale yellow, becoming dark rust-red with age. Stem 40-75 x 6-16mm, solid; same color as cap, becoming rusty yellowish when handled; minutely hairy. Veil forms a hairy or submembranous ring. Flesh firm; pale yellow. Odor pleasant. Taste bitter. Spores ellipsoid, minutely warty, 6-9 x 4-5µ. Deposit brownish rust. No caulocystidia; clamp connections present. Habitat on decaying wood, stumps, logs, and trees. Found in eastern North America. Season August-September. Not edible -suspect. Comment Often mistaken for Gymnopilus junonius (Fr.) P. D. Orton.