Guaiacum hygrometricum (Ruiz & Pav.) Baill. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Zygophyllales family Zygophyllaceae genus Porlieria species Porlieria hygrometra Name Homonyms Guaiacum hygrometricum (Ruiz & Pav.) Baill.