Symphyotrichum cordifolium var. polycephalum (Porter) G.L. Nesom
Symphyotrichum cordifolium var. polycephalum (Porter) G.L. Nesom is a synonym sensu FNA Ed. Comm., 2006b of:
Symphyotrichum cordifolium (Linnaeus) G.L. Nesom, an accepted species name sensu FNA Ed. Comm., 2006b.