Argostemma calycinum R.Br. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Gentianales family Rubiaceae genus Neurocalyx species Neurocalyx calycinus Name Homonyms Argostemma calycinum R.Br. ex Benn. Argostemma calycinum R.Br.