Horkelia congesta Douglas Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Rosaceae genus Potentilla species Potentilla congesta Name Homonyms Horkelia congesta Douglas ex Hook. Horkelia congesta Torr. & A.Gray Horkelia congesta Douglas Horkelia congesta W.H.Brewer & S.Watson Horkelia congesta Newb.