Nostoc calcicola Bréb. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Bacteria phylum Cyanobacteria class Cyanobacteriia order Cyanobacteriales family Nostocaceae genus Nostoc species Nostoc humifusum Name Homonyms Nostoc calcicola Bréb. Nostoc calcicola Bréb. ex Bornet & Flahault Nostoc calcicola (C.Agardh) C.Agardh, 1817