Guaiacum parvifolium Planch. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Zygophyllales family Zygophyllaceae genus Guaiacum species Guaiacum coulteri Name Homonyms Guaiacum parvifolium Planch. ex A.Gray Guaiacum parvifolium Nutt. Guaiacum parvifolium Planch.