Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. Updated April 2019. Scientific name: Polygala sanguinea  L. Common name(s): purple milkwort, field milkwort, blood milkwort, purple polygala, blood polygala Link(s): USDA PLANTS Profile , NPIN Profile, Go Botany Images: (to see enlargements [PC]: click on image, then right click and choose