Spirogyra acanthophora (Skuja) Czurda Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Zygnemataceae genus Spirogyra species Spirogyra acanthophora Name Homonyms Spirogyra acanthophora (Skuja) Czurda