Oxalis violacea Oxalidaceae
Comments: Marbleseed Prairie Preserve, York Prairie Natural Area, Green County, Wisconsin 42° 50' 46.2" North, 89° 45' 59.2" West
( 42.846167, -89.766432 ) 1 June 2013. Scattered throughout at low density.
Added: 6/2/13
WARNING: Accurate determination of this plant or fungus depends on more than this single image.