Compositae Working Group (CWG) (2021). Global Compositae Database. Hieracium washingtonense Gand.. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1123565 on 2024-09-21
original description(1918). Bull. Soc. Bot. France 65 page(s): 51 [details]
From other sources
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Bulletin de la Societe Botanique de France 65: [Tropicos] [details] LSID urn:lsid:compositae.org:names:70CABE20-B03F-451D-AECA-3283AA8090EC [details]