Callitriche stagnalis
Systematics :
Kingdom: Plantae
Artificial group: Vascular plant (Tracheophytes)
Superphylum: Spermatophyte
Phylum: Magnoliophyta
Subclass: Magnoliidae
Family: Plantaginaceae
Genus: Callitriche
Species: Callitriche stagnalis
Norwegian name: Dikevasshår
Confusion species: Callitriche hamulata
Similar sounds: Callitriche hamulata