Ascophyllum nodosum f. mackayi (Turner) Dataset GBIF Backbone Taxonomy Rank FORM Classification kingdom Chromista phylum Ochrophyta class Phaeophyceae order Fucales family Fucaceae genus Ascophyllum species Ascophyllum nodosum Name Homonyms Ascophyllum nodosum f. mackayi (Turner) Ascophyllum nodosum var. mackayi (Turner) Cotton, 1912 Ascophyllum nodosum subsp. mackayi (Turner) Borgesen & Jonsson Ascophyllum nodosum subsp. mackayi (Turner) A.C.Mathieson & Dawes, 2017