Spirogyra elongata H.C.Wood, 1874 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Zygnemataceae genus Spirogyra species Spirogyra tenuissima Name Homonyms Spirogyra elongata H.C.Wood, 1874 Spirogyra elongata (Vaucher) Kütz.