Compositae Working Group (CWG) (2021). Global Compositae Database. Eupatorium polanthum Klatt. Accessed at: https://www.compositae.org/aphia.php?p=taxdetails&id=1183919 on 2024-04-29
LSID urn:lsid:compositae.org:names:9D6F6199-6137-41F2-89E1-625641867BF2 [details] Type material Costa Rica: Cuesta de Tarrazu, 1900 m, leg. avril 1893, Ad. Tonduz (sub Pittier 7797 & Pittier 7820). [details]