[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Eukaryota Chatton, 1925 - eukaryotes see Domain Eukaryota Chatton, 1925
     Class Coscinodiscophyceae Round & R.M. Crawford (1990) - radial centrics
       Subclass Rhizosoleniophycidae Round & R.M. Crawford (1990)
         Order Rhizosoleniales P.C.Silva (1962)
           Family Rhizosoleniaceae De Toni (1890)
             Genus Rhizosolenia Brightw. (1858)
               Rhizosolenia hebetata J.W. Bailey
                 Rhizosolenia hebetata var. semispina (Hensen, 1887) R. Margalef (1951) see Rhizosolenia hebetata f. semispina (Hensen, 1887) Gran (1905)