Nitella flexilis var. nidifica (Hartm.Ex Wallm.) R.Wood Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Charophyceae order Charales family Characeae genus Nitella species Nitella flexilis Name Homonyms Nitella flexilis var. nidifica (O.Müll.) Hartm. ex Wallman Nitella flexilis var. nidifica (O.Müll.) Hartm. Nitella flexilis var. nidifica (Hartm.Ex Wallm.) R.Wood