Heuchera rugelii Shuttlew. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Saxifragales family Saxifragaceae genus Heuchera species Heuchera parviflora Name Homonyms Heuchera rugelii Shuttlew. ex Kunze Heuchera rugelii Shuttlew.