Microthamnion interruptum (Smith) J.Agardh Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Ceramiales family Callithamniaceae genus Seirospora species Seirospora interrupta Name Homonyms Microthamnion interruptum (Smith) J.Agardh ex Ardissone, 1893 Microthamnion interruptum (Smith) J.Agardh