Petalonema Berkeley ex Kirchner, 1898 Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Bacteria phylum Cyanobacteria class Cyanobacteriia order Cyanobacteriales family Scytonemataceae genus Petalonema Name Homonyms Petalonema Berk. ex Correns Petalonema Schltr. Petalonema Gilg Petalonema Peter Petalonema Berkeley ex Kirchner, 1898 Petalonema M.J.Berkeley ex Wolle, 1887