[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 Acrosiphonia J.Agardh (1846)
               1 Acrosiphonia arcta (Dillwyn) Gain (1912)
               2 Acrosiphonia arctiuscula (Kützing) Jónsson
               3 Acrosiphonia flagellata Kjellman
               4 Acrosiphonia grandis Kjelmann (1893)
               5 Acrosiphonia incurva Kjellman
               6 Acrosiphonia sonderi (Kützing) Kornmann (1962)
               7 Acrosiphonia spinescens (Kützing) Kjellmann (1883)