Ulva umbilicalis var. purpurea (Roth) Wahlenberg, 1812 Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Rhodophyta class Bangiophyceae order Bangiales family Bangiaceae genus Porphyra species Porphyra purpurea Name Homonyms Ulva umbilicalis var. purpurea (Roth) Wahlenberg, 1812