Sanguinaria canadensis Linnaeus. Phen: (Late Jan-) Mar-Apr; Apr-May. Hab: Moist nutrient-rich forests. Dist: NS west to MN and MB, south to Panhandle FL and OK.
Origin/Endemic status: Native
Taxonomy Comments: Fernald recognized two varieties – var. rotundifolia, more southern and the primary form in our area, considered to have leaves less lobed than the more northern var. canadensis; leaf shape variability within populations makes it impractical to recognize infraspecific taxa.
Synonymy: = Ar, C, Fl2, FNA3, G, GrPl, Il, K1, K3, K4, Mi, NE, NY, Pa, RAB, S, Tn, Va, W, WH3; > Sanguinaria canadensis L. var. canadensis – F; > Sanguinaria canadensis L. var. rotundifolia (Greene) Fedde – F, Tx