Posidonia C.Koenig, 1805 Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Alismatales family Posidoniaceae genus Posidonia Name Homonyms Posidonia K.D.Koenig Posidonia Bronn, 1828 Posidonia Sadykov, 1962 Posidonia C.Koenig, 1805