Abstract
In this second contribution on native American species in Russula subsect. Decolorantes, the authors focus on four additional species that exhibit a blackening context: two species from the West Coast, R. californiensis and R. occidentalis, and two species from the East Coast, R. rubescens and R. rubriceps. A key to the species in Decolorantes is provided. Russula californiensis and R. rubescens are lectotypified.