Epactium Willd. Dataset GBIF Backbone Taxonomy Rank GENUS Published in J.A.Schultes & J.H.Schultes, Mant. 3: 15 (1827) Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Myrtales family Onagraceae genus Ludwigia Name Homonyms Epactium Willd. ex Schult., 1827 Epactium Willd.