Holodiscus discolor subsp. glabrescens (Greenm.) Jeps. Dataset GBIF Backbone Taxonomy Rank SUBSPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Rosaceae genus Holodiscus species Holodiscus discolor Name Homonyms Holodiscus discolor var. glabrescens (Greenm.) Jeps.