Erigeron peregrinus var. angustifolius (A. Gray) Cronquist
Erigeron peregrinus var. angustifolius (A. Gray) Cronquist is a synonym sensu FNA Ed. Comm., 2006b of:
Erigeron glacialis (Nuttall) A. Nelson var. glacialis, an accepted variety name sensu FNA Ed. Comm., 2006b.