Natura - nature
   actualia - actual entities
     Mundus Plinius - physical world
       naturalia - natural bodies
         Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
           Clade neomura Cavalier-Smith, 1987
             Domain Eukaryota Chatton, 1925 - eukaryotes
               Clade discaria Cavalier-Smith, 2021
                 Clade natates Cavalier-Smith, 2021
                   Clade photaria Cavalier-Smith, 2021
                     Clade eucorta Cavalier-Smith, 2021
                       Superkingdom Corticata Lankester, 1878 - corticates
                         Kingdom Plantae Haeckel (1866) - plants
                           Subkingdom Viridiplantae Caval.-Sm. (1981) - green plants
                             Infrakingdom Streptophyta Caval.-Sm. (1993)
                               Clade Phragmoplastophyta Lecointre & Le Guyader 2006 [Hall, McCourt, Delwiche, Mishler & Karol 2020]
                                 Phylum Charophytaᵀ Migula (1889) [monotypic]
                                   [Class Conjugatophyceae Engl. (1892), sedis mutabilis] see Class Zygnematophyceae Round ex Guiry (2013)
                                     Order Desmidiales - placoderm desmids
                                       Family Desmidiaceaeᵀ Kützing ex Ralfs (1845)
                                         Genus Staurastrum Meyen ex Ralfs (1848)
                                           Staurastrum flagriforme
                                           Staurastrum gracile Ralfs
                                           Staurastrum jonsonii
                                           Staurastrum leptacanthum
                                           Staurastrum leptocladum
                                           Staurastrum longipes
                                           Staurastrum novaecaesareae
                                           Staurastrum paradoxum Meyen ex Ralfs
                                           Staurastrum polonicum
                                           Staurastrum pseudopachyrhynchum
                                           Staurastrum pseudosebaldi
                                           Staurastrum sebaldi Reinsch
                                           Staurastrum subanchora
                                           Staurastrum subophiura
                                           Staurastrum tectum