[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 Acrosiphoniales see Order Ulotrichales Borzi
           Family Acrosiphonaceae see Family Acrosiphoniaceae S. Jónsson (1959)
             Genus Urospora Aresch. (1866), nom. cons.
               Urospora penicilliformis (Roth) Aresch. (1874)