Ceramium ciliatum var. acanthonotum Carmichael Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Ceramiaceae genus Ceramium species Ceramium shuttleworthianum Name Homonyms Ceramium ciliatum var. acanthonotum Carmichael ex Harvey, 1833 Ceramium ciliatum var. acanthonotum Carmichael