Myriophyllum alterniflorum

Systematics :

Kingdom: Plantae
Artificial group: Vascular plant (Tracheophytes)
Superphylum: Spermatophyte
Phylum: Magnoliophyta
Subclass: Magnoliidae
Family: Haloragaceae
Genus: Myriophyllum
Species: Myriophyllum alterniflorum

Norwegian name: Tusenblad