Pylaiella littoralis f. elongata Kjellman, 1890 Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Ectocarpales family Acinetosporaceae genus Pylaiella species Pylaiella littoralis Name Homonyms Pylaiella littoralis f. elongata Kjellman, 1890