About Xeromphalina kauffmanii A.H.Sm.
The cap of the Xeromphalina kauffmanii fruit body is convex, sometimes developing a central depression when mature, and ranges 4–15 mm (0.16–0.59 in) across. When young, the cap is bright rusty orange, fading to bright orange or cinnamon as it matures. This species has narrow gills that range in color from light yellow to cream. The reddish stipe measures 1.7–3 cm (0.7–1.2 in) long by 0.8–2 mm wide. Yellowish fibrils cover the base of the stipe, and white rhizomorphs anchor the base to its growing substrate. The mushroom has thin, cream-colored flesh. It has an indistinct odor, and its taste is initially mild before becoming slightly bitter. The spore print of Xeromphalina kauffmanii is white. Its spores are elliptical, thin-walled, and amyloid, measuring 4.2–6 by 2.5–3.5 μm. The spore-bearing basidia are club-shaped, four-spored, and measure 21–25 by 4–5 μm. Xeromphalina kauffmanii fruits in dense groups or clusters on rotting hardwood logs and stumps. Fruiting occurs from summer to autumn in eastern North America. The fungus has also been recorded in Costa Rica and Japan.
