Cosmarium cucurbita Bréb. Dataset Rank SPECIES Classification kingdom Plantae phylum Charophyta class Zygnematophyceae order Zygnematales family Desmidiaceae genus Actinotaenium species Actinotaenium cucurbita Name Homonyms Cosmarium cucurbita Bréb. ex Ralfs Cosmarium cucurbita Bréb.