Erigeron peregrinus (Banks ex Pursh) Greene f. membranaceus

Washington: Yakima: East slope, Mount Aix.
46.822123° N, 121.22513° W,
Https://intermountainbiota.org/portal/collections/individual/index.php?occid=30863235. Phenology: flowering and fruiting.

C. Schwartze 1, 1922-8-1
WS, Catalog: 133449