[organisms] see Clade Biota Wagner 2004 [Wiemann, de Queiroz, Rowe, Planavsky, Anderson, Gogarten, Turner & Gauthier 2020]
   Kingdom Algae L. (1753) see [unranked] Algae
     Phylum Chlorophycota see Phylum Chlorophyta Pascher (1914)
       Class Chlorophyceae Wille (1884) - chlorophytes
         Order Chaetophorales Wille
           Family Chaetophoraceae Grev.
             Genus Ulvella P.Crouan & H.Crouan (1859)
               1 Ulvella acervus P.J.L. Dangeard
               2 Ulvella lens P.L. Crouan & H.M. Crouan (1859)
               3 Ulvella nadsonii (Rochlina) Gallardo et al.
               4 Ulvella setchellii P.J.L. Dangeard (1931)
               5 Ulvella stellata P.J.L. Dangeard (1965)