Invasive Plants of Oklahoma
Maps for confirmed county distributions in Oklahoma are by Oklahoma Biological Survey and should be considered works in progress.
Eurasion watermilfoil is a rooted, submerged aquatic with leaves with hair like leaflets whorled usually in groups of fours. The portion of the stem with flowers is held above the water. The plants are often spread by fragmentation.

Photos: Chris Evans, River to River CWMA, Bugwood.org
