COMMON NAME: Chicken-fat Suillus, American Slippery Jack.

CAP: (3-10 cm) wide, rounded with an incurved margin when young, becoming broadly convex in age, occasionally with an umbo; surface sticky or slimy when moist, bright yellow to ochre-yellow, with cinnamon to reddish patches or streaks; margin rimmed with white to yellow or pale brown, cottony veil tissue; flesh yellow, staining purplish brown when cut; odor and taste not distinctive.

PORE SURFACE: yellow when young, slightly browner in age, slowly staining reddish brown when cut or bruised; pores angular, occasionally radially elongated, often decurrent, 1-2 mm wide.

STALK: (3-9 cm) long, (3-10 mm) thick, nearly equal, becoming hollow, often crooked, not reticulate, yellow, speckled with reddish to dark brown glandular dots and smears, often developing wine-red or wine-brown stains when bruised or in age; veil present, covering most or all of the pore surface when young, but typically remaining attached to the edge of the cap and not leaving a ring on the stalk.

SPORE PRINT: brown.

MICROSCOPIC FEATURES: spores 8-11 x 3-4 μm, nearly fusiform, smooth, pale brown.

FRUITING: solitary, in groups, or caespitose on the ground under white pine; July-October; fairly common to common.

EDIBILITY: edible.

COMMENTS: when handled, this mushroom stains fingers brownish.

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