Ceanothus laevigatus Raf. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Rosales family Rhamnaceae genus Ceanothus species Ceanothus americanus Name Homonyms Ceanothus laevigatus (Vahl) DC. Ceanothus laevigatus Howell Ceanothus laevigatus Hook. Ceanothus laevigatus Raf.