Tortitaenia obscura (Ralfs) Brook Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Mesotaeniaceae genus Tortitaenia species Tortitaenia obscura Name Synonyms Entospira obscura (Ralfs) Kuntze, 1898 Polytaenia obscura (Ralfs) Brook, 1997 Spirotaenia obscura Ralfs Homonyms Tortitaenia obscura (Ralfs) Brook