Raphidiastrum longispinum (Bailey) Pal.-Mordv. Dataset GBIF Backbone Taxonomy Rank SPECIES Classification kingdom Plantae phylum Charophyta class Conjugatophyceae order Desmidiales genus Staurastrum species Staurastrum longispinum Name Homonyms Raphidiastrum longispinum (Bailey) Pal.-Mordv. ex Petlovany, 2015 Raphidiastrum longispinum (Bailey) Pal.-Mordv.