: Family = Ceratophyllaceae :
Ceratophyllum demersum, close up, flowers
Ceratophyllum demersum, close up, leaves
Ceratophyllum demersum, leaves, whole plant, best of name
Ceratophyllum demersum, leaves, whole plant
Ceratophyllum muricatum subsp. muricatum,
Ceratophyllum demersum