Carex buxbaumii var. virescens Norman Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Cyperaceae genus Carex species Carex buxbaumii Name Homonyms Carex buxbaumii f. virescens Norman Carex buxbaumii var. virescens Norman