Arenaria palustris var. humilior Ces. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Magnoliopsida order Caryophyllales family Caryophyllaceae genus Arenaria species Arenaria serpens Name Homonyms Arenaria palustris var. humilior Ces. Arenaria palustris subsp. humilior Ces.