The edible wild mushroom Russula heterophylla, that has lately been given the common name of the greasy green brittlegill is placed in the Russula genus, the members of which are mostly known as brittlegills. It is a variably colored mushroom, found in deciduous forests, and woods in Britain, Europe, and Scandinavia. Appearing with broad-leaved trees in summer to early autumn, it usually has a greenish coloration.