Thesium strictum Krauss ex DC. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Santalales family Thesiaceae genus Thesium species Thesium paniculatum Name Homonyms Thesium strictum Dumort. Thesium strictum P.J.Bergius Thesium strictum Krauss ex DC. Thesium strictum Krauss