Carex sempervirens f. firma (Mygind ex Host) Rouy, 1912 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Cyperaceae genus Carex species Carex firma Name Homonyms Carex sempervirens subsp. firma (Host) Bonnier & Layens