Lactarius payettensis Smith. Cap 8-l6cm across, broadly convex with a widely depressed disc and an incurved margin; pale tc dark straw yellow; smooth in the disc, very sticky and glutinous with coarse hairs or fibers, particularly around the margin. Gills decurrent, close to subdistant, narrow; cream becoming dirty yellow, staining darker along the margins. Stem 20-50 x 20-40mm, hard, hollow, pinched off at the base; white with large, smooth brownish-yellow spots, bruising darker. Flesh thick, firm, hard; pale becoming dirty brownish yellow. Latex white, scant, staining gills and flesh dull yellow to dark brownish yellow along the edges. Odor faintly bitter and unpleasant. Taste immediately and strongly acrid and burning. Spores ellipsoid, mostly nonamyloid but some amyloid warts, 8.2-9.6 x 7.4-7.8µ; ornamented with a sparse network of lines mostly not united into a complete reticulum, prominences 0.3-0.8µ. high. Deposit pale cream. Habitat scattered under spruce, fir, and alder. Found in Idaho and Colorado. Season June-September. Not edible. Comment Very similar to Lactarius alnicola var. alnicola