Russula is a genus of mushrooms known for its diverse and colorful species. These fungi are commonly found in forests and woodlands, often growing in association with trees. They typically have a distinctive cap that can be red, green, or purple, and a white or yellow stem. Many Russula species are edible, while others can be toxic, making identification important for foragers. They are characterized by their brittle flesh and gills that are attached to the stem. Russula mushrooms play a vital role in the ecosystem by forming symbiotic relationships with trees, aiding in nutrient exchange.