Roya obtusa var. anglica (G.S.West) Willi Krieg. Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Mesotaeniaceae genus Roya species Roya anglica Name Homonyms Roya obtusa var. anglica (G.S.West) Willi Krieg.