[The Water Milfoil Family East of the Cascade Mountains of Oregon and Washington]

South American Water Milfoil, Parrot's Feather, Parrot Feather Water-milfoil, Water Feather

Myriophyllum aquaticum

Synonym: Myriophyllum brasiliense

South American Water Milfoil, Parrot's Feather, Parrot Feather Water-milfoil, Water Feather: Myriophyllum aquaticum (Synonym: Myriophyllum brasiliense)

What may be South American water milfoil as seen on a moist, muddy bank on the west side of Homestead Island, McNary National Wildlife Refuge............October 3, 2012.
Paul Slichter