#order_Zygnematales__Zygnematales__Zygnemales__order_Zygnemales  pond scums; desmids
  supertype:  animal_order  the order of animals
  member of:  class_Chlorophyceae
  member:  family_Zygnemataceae__Zygnemataceae  pond scums: common freshwater algae forming green slimy masses
     member:  genus_Zygnema__Zygnema  type genus of the family Zygnemataceae
     member:  pond_scum  free-floating freshwater green algae
     member:  genus_Spirogyra  a genus of protoctista
        member:  spirogyra  freshwater algae consisting of minute filaments containing spiral chlorophyll bands

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