Russula amethystina

Species typical of montane conifers, with a convex pileus 6 to 12 cm across, violaceous brown; pale yellow spore print; free lamellae; hollow and brittle white stipe; iodoform odor and mild taste.

Cuticle formed by cylindrical hyphae, slightly interwoven, 4 to 6 µm wide, those in the superficial layer separated by gelification, septate with simple septa (without clamp connections).

Cheilocystidia and pleurocystidia subcylindrical to clavate, 65 to 95 µm long and 10 to 15 µm wide.

Basidia cylindrical-clavate, 40 to 55 µm long, 10 to 14 µm wide, simple-based and four-spored.

Spores subglobose to ovoid, with warts up to 0.5 µm high, 8 to 10 µm long, 7 to 8.5 µm wide, ornamented with isolated warts, some joined in small groups, but without forming true ridges or a reticulum.