Convolvulus trigonus Buch.-Ham. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Solanales family Convolvulaceae genus Ipomoea species Ipomoea obscura Name Homonyms Convolvulus trigonus Buch.-Ham. ex Wall. Convolvulus trigonus Buch.-Ham.