Psilostoma Klotzsch Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Rubiaceae genus Canthium Name Homonyms Psilostoma Klotzsch Psilostoma Surcouf, 1919 Psilostoma Klotzsch ex Eckl. & Zeyh.