"Species Details - Erigeron philadelphicus L. ssp. multifidus (Nutt. ex Torr. & A. Gray) Hultén, University of Alberta Vascular Plant Herbarium." University of Alberta Museums Search Site, https://search.museums.ualberta.ca/g/1-8686. Accessed 10 May. 2024.
There is 1 specimen of this Species.