Eurasian watermilfoil
Family
HaloragaceaeScientific Name
Myriophyllum spicatumOther Common Names:
myriophylle en epi
spike water-milfoil
Leaves
Leaves are finely divided and take on a stiff, feathery appearance. Leaves occur in whorls of 4 and are up to 1 inch in length, with at least 12 stiff leaflets that occur oppositely from one another.
Identifying Characteristics
A mostly submersed perennial with feathery-like leaves that can spread and reproduce by fragmentation of the stems. Emersed perennial aquatic weeds with leaves that are divided into many stiff leaflets that resemble a feather.
Flower Seed Head
Stems: Stout, rooting often. Fragmented stems are capable of producing new plants.
Flowers: Flowering stems are usually emersed and inconspicuous.
Life Cycle
perennial
Plant Type
Herb