Penstemon mexicanus hort. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Lamiales family Plantaginaceae genus Tetranema species Tetranema roseum Name Homonyms Penstemon mexicanus hort. ex A.DC. Penstemon mexicanus Benth. Penstemon mexicanus hort.