Pluteus Americanus

• Cap: 1 – 6 cm in diameter, at first campanulate to hemispherical, expanding to convex at maturity. It often has a low, broad umbo and a darker squamulose cap center. The margin can be radially fibrillose. The color is brown to grey, often darker towards the center, occasionally staining blue. Dry to somewhat viscid when moist, changing to a lighter color as the cap dries out.
• Gills: Crowded, broad, free, at first white, becoming pink in maturity. Sometimes bruising blue.
• Stipe: 1.5 — 6.5 long, 0.3 — 0.6 cm thick, more or less equal or slightly swollen at the base, white with grayish-green to bluish-green tones, especially near the base or where damaged. Ring absent.
• Taste: Like Pelargonium leaves, occasionally mild.
• Odor: Strong, like leaves of Pelargonium. Occasionally mild.
• Spores: Pink, smooth, ellipsoid, 6.5 — 9.5 (-11) x 4.5 – 7 (-7.5) μm. Spore print pink-flesh colored to brown-pink.
• Microscopic features of Pluteus Americanus : Pleurocystidia common, metuloid, fusiform, narrowly fusiform or narrowly utriform with slightly thickened walls 50 — 93 x 12 — 24 (-28) μm; with 2 — 4 horn-like projections. Cheilocystidia 34 – 65 (-70) x 12 – 22 μm, clavate, narrowly clavate or spheropedunculate, hyaline or brown, thin-walled, forming a sterile band. Pileipellis a cutis with cylindrical terminal elements, occasionally narrowing at the apex, hyaline or brown. Clamp connections common.