Publication: Bot. Surv. Olympic Penins. 244. 1936.
selected vouchers: WTU
Notes: FNA20: "Erigeron flettii differs from E. grandiflorus in having fewer, wider, consistently white rays, broadly spatulate basal leaves with bases constricted into narrow petioles longer than the blades and apices rounded or obtuse, less dense involucral vestiture, and strongly barbellate pappus bristles. It is known only from the Olympic Mountains."