Costus cernuus Sw. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Zingiberales family Zingiberaceae genus Renealmia species Renealmia cernua Name Homonyms Costus cernuus Sw. ex Roem. & Schult. Costus cernuus Sw.