Aster falcatus var. crassulus (Rydberg) Cronquist
Aster falcatus var. crassulus (Rydberg) Cronquist is a synonym sensu FNA Ed. Comm., 2006b of:
Symphyotrichum falcatum var. commutatum (Torrey & A. Gray) G.L. Nesom, an accepted variety name sensu FNA Ed. Comm., 2006b.