Conservation officials say species like zebra mussels and Eurasian water milfoil can spread rapidly by attaching to recreational boats moved from one waterway to another.
Washington Times(Aug 18, 2016)
n an aquatic plant of the genus Myriophyllum having feathery underwater leaves and small inconspicuous flowers
Hyper
aquatic plant, hydrophyte, hydrophytic plant, water plant
a plant that grows partly or wholly in water whether rooted in the mud, as a lotus, or floating without anchorage, as the water hyacinth