Ulva compressa var. purpurea C.Agardh, 1817 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Gigartinales family Dumontiaceae genus Dumontia species Dumontia contorta Name Homonyms Ulva compressa var. purpurea C.Agardh, 1817