Porphyra umbilicalis f. epiphytica F.S.Collins, 1903 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Plantae phylum Rhodophyta class Bangiophyceae order Bangiales family Bangiaceae genus Porphyra species Porphyra umbilicalis Name Homonyms Porphyra umbilicalis f. epiphytica F.S.Collins, 1903