Penium Dataset GBIF Backbone Taxonomy Rank GENUS Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Peniaceae genus Penium Name Homonyms Penium Kowarz, 1855 Penium Philippi, 1865 Penium Lundbeck, 1916 Penium Brébisson ex Ralfs, 1848