Arenaria macrotheca Hornem. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Caryophyllaceae genus Spergularia species Spergularia macrotheca Name Homonyms Arenaria macrotheca Hornem. ex Cham. & Schltdl. Arenaria macrotheca Hornem.