Ruehssia H.Karst. ex Schltdl. Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Apocynaceae genus Marsdenia Name Homonyms Ruehssia H.Karst. Ruehssia H.Karst. ex Schltdl.