Callithamnion microscopicum Nägeli Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Rhodophyta class Florideophyceae order Acrochaetiales family Acrochaetiaceae genus Acrochaetium species Acrochaetium microscopicum Name Homonyms Callithamnion microscopicum Nägeli ex Kützing Callithamnion microscopicum Nägeli