Aster laxifolius var. borealis Torrey & A. Gray

Aster laxifolius var. borealis Torrey & A. Gray is a synonym sensu FNA Ed. Comm., 2006b of:

Symphyotrichum boreale (Torrey & A. Gray) Á. Löve & D. Löve, an accepted species name sensu FNA Ed. Comm., 2006b.