Compositae Working Group (CWG) (2025). Global Compositae Database. Achillea nigrescens (E.Mey.) Rydb.. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1113027 on 2025-04-28
Contributed data: Authors Data only shown for fields conflicting with the consensus taxon record (E. Mey.) Rydb. [Euro+Med] (E. Mey.) Rydb. [Preliminary Checklist of North American Compositae] (E. Mey.) Rydb. [Tropicos] Rydb. [IPNI] [details] Contributed data: Basionym Data only shown for fields conflicting with the consensus taxon record Achillea millefolium var. nigrescens E. Mey. [Euro+Med] Achillea millefolium var. nigrescens E. Mey. [Tropicos] [details] Contributed data: Full Name Data only shown for fields conflicting with the consensus taxon record Achillea nigrescens (E. Mey.) Rydb. [Euro+Med] Achillea nigrescens (E. Mey.) Rydb. [Preliminary Checklist of North American Compositae] Achillea nigrescens (E. Mey.) Rydb. [Tropicos] Achillea nigrescens Rydb. [IPNI] [details] Contributed data: Published Data only shown for fields conflicting with the consensus taxon record N. Amer. Fl. 34 [Govaerts World Compositae Checklist A-G] N. Amer. Fl. 34, 3 : 222 (1916) [Vascular Plants of Russia] North American Flora 34(3): [Tropicos] Rydb. in N. Amer. Fl., ser. 1 34(3). 1916. [Euro+Med] [details] LSID urn:lsid:compositae.org:names:7C7CCF83-16B8-4C8B-AB10-EE3F4E41E77A [details] Taxonomy 29 Dec 1916 [details]