Compositae Working Group (CWG) (2025). Global Compositae Database. Haplopappus enormidens Moran. Accessed at: https://www.compositae.org/gcd/aphia.php?p=taxdetails&id=1119548 on 2025-03-27
LSID urn:lsid:compositae.org:names:FEC241B2-5B20-487E-B21A-126E1A11B1A3 [details] Type material 22062, R.V.Moran, James L.Reveal, holotype SD [details]