Lactarius decipiens

General: Occurring under Quercus or Fagus, with white latex turning yellow within minutes on drying, and an acrid, bitter taste.

Pileipellis: Suprapellis composed of a thin layer of filamentous, slightly interwoven terminal hyphae 4-6 µm wide; subpellis of broader, short-celled elements 15-22 x 8-17 µm.

Cheilocystidia: Not observed in this collection; literature describes them as fusiform, 25-60 x 4-8 µm.

Basidia: Clavate, slightly ventricose, 37-50 x 8-11 µm, base simple, 2- or 4-spored.

Spores: Subspherical to ellipsoid, with warts connecting into short ridges up to 1.2 µm high, with a hyaline apiculus, amyloid in Melzer's reagent.