Spiraea caespitosa var. elatior S.Watson Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Rosaceae genus Petrophytum species Petrophytum caespitosum Name Homonyms Spiraea caespitosa var. elatior S.Watson Spiraea caespitosa subsp. elatior S.Watson