Pediastrum tetras var. tetrapedia (Kirchner) Playfair Dataset GBIF Backbone Taxonomy Rank VARIETY Classification kingdom Plantae phylum Chlorophyta class Trebouxiophyceae genus Crucigenia species Crucigenia tetrapedia Name Homonyms Pediastrum tetras var. tetrapedia (Kirchner) Playfair Pediastrum tetras subsp. tetrapedia (Kirchner) Playfair