Hydrangea cyanea Lavallée Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Cornales family Hydrangeaceae genus Hydrangea species Hydrangea serrata Name Homonyms Hydrangea cyanea Lavallée Hydrangea cyanea G.Nicholson Hydrangea cyanea G.W.Johnson & R.Hogg