Prunella vulgaris
An occasional weed in moist, higher elevation areas. I have pictures from New Mexico as well as Indiana, where it is more common.
Plant habit at Bluff Springs in the Sacramento Mts., 7/4/05.
A flower near Griffy Lake on the north side of Bloomington, IN, 8/9/03.
A cauline leaf near Griffy Lake, 8/9/03.