Aster occidentalis (Nuttall) Torrey & A. Gray

Aster occidentalis (Nuttall) Torrey & A. Gray is a synonym sensu FNA Ed. Comm., 2006b of:

Symphyotrichum spathulatum (Lindley) G.L. Nesom var. spathulatum, an accepted variety name sensu FNA Ed. Comm., 2006b.