Prepared by Jennifer L. D’Appollonio, Assistant Scientist, University of Maine, Orono, ME 04469. March 2011. Scientific name: Nuttallanthus canadensis (L.) D.A. Sutton Common name(s): blue toadflax, Canada toadflax, old-field toadflax Links: USDA PLANTS Profile , NPIN Profile, Go Botany Images: (to see enlargements [PC]: click on image, then right click and choose “view image”) [gallery