Compositae Working Group (CWG) (2021). Global Compositae Database. Hieracium halfdanii Ósk.. Accessed at: https://compositae.org/aphia.php?p=taxdetails&id=1101678 on 2024-05-14
original description(1957). Rit Visindafj. Islend., Akureyri 31 page(s): 70 [details]
Present Inaccurate Introduced: alien Containing type locality
From other sources
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Ósk. in Vísindaf. Íslend. 31. 1957 [Cichorieae Portal] Ósk., in Vísindaf. Íslend. 31. 1957. [Euro+Med] [details] LSID urn:lsid:compositae.org:names:BEE0CCD8-2416-4E46-B0BC-93DCC8FAB837 [details]