... Hydrilla verticillata,Potamogeton maackianus, and Najas marina, and Azollaim imbricate Najas minor196 0s Potamogeton maackianus, Trapa bispinosa,Najas marina, Hydrilla verticillata, Potamogeton ... malaianus,Myriophyllum spicatum, and Vallisneria spiralis, and Ceratophyllum demersum Hydrilla verticillata197 0s Najas marina198 0s Najas marina Potamogeton Potamogeton malaianus,maackianus, ... malaianus,Myriophyllum spicatum, maackianus, Potamogeton maackianus, and Vallisneria spiralis Myriophyllum spicatum, and Trapa quadrispinosa and Ceratophyllum demersumPresent Typha orientalis and...