https://www.uppermissouriwaterkeeper.org/tag/montana-milfoil/
montana milfoil - Upper Missouri Waterkeeper®
montanamilfoiluppermissouri
https://minnesotawildflowers.info/aquatic/alternate-flowered-water-milfoil
Myriophyllum alterniflorum (Alternate-flowered Water-milfoil): Minnesota Wildflowers
Photos and information about Minnesota flora - Alternate-flowered Water-milfoil: aquatic, much branched, green to red; leaves whorled in 4s, leaf with 3 to 10...
myriophyllum alterniflorumwater milfoilminnesota wildflowersalternateflowered