Russula cyanoxantha

Species typical of both conifers and broadleaves, especially under Fagus or Picea, with an applanate pileus with a depressed center, 5 to 15 cm across, brownish grey with greenish tints; lardaceous (greasy, non-brittle) lamellae; white spore print; mild, indistinct odor and sweet taste.

Cuticle composed of filamentous, interwoven hyphae 2 to 5 µm wide, widely spaced by gelification, with some terminal hyphae acting as pileocystidia 2 to 3.5 µm wide with greyish pigment inside, septate and without clamp connections.

Cheilocystidia and pleurocystidia cylindrical to fusiform, 35 to 60 µm long and 4 to 7 µm wide.

Basidia clavate, 45 to 55 µm long, 8 to 10 µm wide, lacking basal clamp connections, four-spored.

Spores subglobose, with short warts only up to 0.5 µm high, 7 to 8.5 µm long, 6 to 7.5 µm wide, ornamented with scattered warts that do not coalesce into ridges.