Compositae Working Group (CWG) (2021). Global Compositae Database. Eupatorium oregonum Nutt.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1183104 on 2025-03-09
Contributed data: Notes Data only shown for fields conflicting with the consensus taxon record as "Oregonum" [Tropicos] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Trans. Amer. Philos. Sec. 7: 286. 1841. [Robinson Eupatorieae] Trans. Amer. Philos. Soc. , n.s., 7 [Govaerts World Compositae Checklist A-G] Transactions of the American Philosophical Society 7: [Tropicos] [details] LSID urn:lsid:compositae.org:names:3954840D-8B61-4530-ACC2-609291E34418 [details] Taxonomy Oct-Dec 1840 [details]