Agaricus porphyrizon (Cke.) Orton Cap 4-10cm across, convex; whitish with purplish-lilac adpressed scales and fibrils, darker at center, bruising dull yellow; smooth. Gills free, crowded; white to pinkish then brown. Stem 50-100 x 12-20mm, clavate; white, staining yellow when touched; smooth; ring membranous, thin, simple. Flesh white staining yellowish in stem, especially at base. Odor pleasant, of almonds. Taste pleasant, of almonds. Spores ovoid, 4.5-5.6 x 3.2-3.8µ. Deposit deep brown. Habitat in mixed woodlands, mostly conifers. Found in Colorado. Season September. Edible. Comment This species does not satisfactorily fit any current American taxa but does agree very well with the European name given here, particularly in the very narrow spores.