Gymnopilus humicola Harding ex Singer Cap 2-6cm across, convex-flattened with wavy inrolled margin; reddish brown, auburn, tawny orange to russet; smooth, glabrous to finely squamulose, cracking when dry. Gills adnate-decurrent, broad; bright yellow then orange-brown from the spores, staining deep rust-red where bruised. Stem 25-100 x 3-l0mm, equal; pale orange-buff to tawny orange, staining darker where handled; fibrillose, base with cream-colored tomentum. No veil. Flesh pale buff yellow. Odor pleasant, slightly aromatic. Taste bitter. Spores warty, dextrinoid, 7-8.5(9) x 4-5µ. Deposit bright rust-brown. Pleurocystidia and cheilocystidia both present, capitate. Habitat usually on soil in humus or in flower beds mulched with wood chips. Found widely distributed in North America west of the Mississippi River. Season June-December. Not edible -suspect.