Erigeron peregrinus var. eucallianthemus Cronquist nom. inval.
Erigeron peregrinus var. eucallianthemus Cronquist nom. inval. 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.