: Genus = Hydrilla :
Hydrilla verticillata, leaves, whole plant
Hydrilla verticillata, close up
Hydrilla verticillata, whole plant
Hydrilla verticillata, leaves, whole plant
Hydrilla verticillata, close up, fruit
Hydrilla verticillata, leaves, whole plant, best of name
Hydrilla verticillata, close up, leaves