Cap: 3-17 cm; convex becoming broadly convex or flat; slimy and yellow underneath scattered brownish to reddish, appressed fibers and down; often developing a reddish-spotted or streaked appearance; when young with a cottony to felty roll of marginal tissue that sometimes persists into maturity as an inrolled sterile margin. The cap stains waxed paper bright yellow.
Pore Surface: Pale orange to orange or yellowish; not bruising; pores angular and radially arranged, about 2 per mm across; tubes to 1 cm deep.
Stem: 4-8 cm long; 1-2 cm thick; more or less equal; sticky when young; yellowish, discoloring brownish on handling; by maturity with visible brownish glandular dots; without a ring.
Flesh: Yellow; not staining on exposure, or staining pinkish to reddish.
Odor and Taste: Not distinctive.
Chemical Reactions: Ammonia on cap surface olive to red or pinkish; on flesh reddish to pinkish. KOH negative to bluish on cap surface; pinkish, grayish, or purplish on flesh. Iron salts negative on cap surface; olive to negative on flesh.
Spore Print: Olive brown.
Microscopic Features: Spores 7-10 × 3-4 µ; smooth; subfusoid.