Laccaria ochropurpurea

Common Name: None.
Description: Cap 5-15 in across, convex then flattened and often upturned; purplish brown to purplish flesh or ochre, with surface dry and smooth or squamulose. Stem 50-150 by 10-20 mm high and wide.
Habitat: in open grassy woods under oak and other deciduous trees. Common. Found east of the Great Plains.
Edible: good.

Source: Mushrooms of North America by Roger Phillips.