Luzula erecta f. nigricans (Desv.) Rouy, 1912 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Tracheophyta class Liliopsida order Poales family Juncaceae genus Luzula species Luzula sudetica Name Homonyms Luzula erecta subsp. nigricans (Desv.) Berher Luzula erecta f. nigricans Zapal.