Sirosiphon hormoides (Kütz.) Kütz., 1849 Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Bacteria phylum Cyanobacteria class Cyanobacteriia order Cyanobacteriales family Nostocaceae genus Stigonema species Stigonema hormoides Name Homonyms Sirosiphon hormoides (Kütz.) Kütz., 1849