Lactarius olympianus Smith & Hesler. Cap 6-12cm across, broadly convex with a depressed disc and a wavy, incurved margin that becomes uplifted, making the cap funnel-shaped; tones of bright yellow and apricot orange with concentric bands of color; smooth, sticky. Gills adnate, close to subdistant, narrow; white to pale fawn or dingy yellow, bruising dirty orange or dark orange-brown. Stem 40-60 x 15-25mm, tapering slightly toward the base; whitish with a white bloom, bruising dingy ochre at the base. Flesh thin, fairly fragile; white. Latex white, unchanging but stains gills dark orange or dark orange-brown. Spores broadly ellipsoid, amyloid, 8-11 x 7.5-9µ; ornamented with short or long ridges, often branched, forming a broken or complete reticulum, prominences 0.5-1.5µ high. Deposit cinnamon buff. Habitat scattered to gregarious in conifer forests. Common. Found in the Rockies and the Pacific Northwest. Season June-October. Not edible.