Compositae Working Group (CWG) (2021). Global Compositae Database. Willoughbya trinervis (Hook. & Arn.) Rusby. Accessed at: https://compositae.org/aphia.php?p=taxdetails&id=1204606 on 2025-01-28
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Bull. New York Bot. Gard. 4: 381. 1907. [Robinson Eupatorieae] Bulletin of the New York Botanical Garden 4: [Tropicos] [details] LSID urn:lsid:compositae.org:names:0EBB32BB-EB06-449C-B8D1-CD7B41C9B9A2 [details]