Thamnophora seaforthii (Turner) C.Agardh, 1822 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Rhodomelaceae genus Alsidium species Alsidium seaforthii Name Homonyms Thamnophora seaforthii (Turner) C.Agardh, 1822