Compositae Working Group (CWG) (2025). Global Compositae Database. Haplopappus illini Speg.. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1141071 on 2025-03-25
original description(1899). Anales Soc. Ci. Argent. 48 page(s): 181 [details]
Unreviewed
Contributed data: Published Data only shown for fields conflicting with the consensus taxon record Nov. Add. Fl. Patag. 1 [IPNI] [details] LSID urn:lsid:compositae.org:names:2D06E447-AAFD-4E66-90A4-C5332486F4A0 [details] Type material Jan 1899, N.Illin, holotype LP [details]