Penstemon crassifolius Shuttlew. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Lamiales family Plantaginaceae genus Penstemon species Penstemon hirsutus Name Homonyms Penstemon crassifolius Shuttlew. ex Benth. Penstemon crassifolius Lindl. Penstemon crassifolius Shuttlew.