Organismen see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020] Kingdom Plantae Haeckel (1866) - plants Subkingdom Protophyta Class Cosmariae Order Closteriaceae Bessey (1907) 1 Genus Euastrum Ehrenb. ex Ralfs (1848)