Elatine triandra

Elatine triandra
Elatine triandra flower

Secure  (NatureServe)
Scientific classification
Kingdom: Plantae
Clade: Tracheophytes
Clade: Angiosperms
Clade: Eudicots
Clade: Rosids
Order: Malpighiales
Family: Elatinaceae
Genus: Elatine
Species:
E. triandra
Binomial name
Elatine triandra
Schkuhr.

Elatine triandra is a species of flowering plant belonging to the family Elatinaceae. It is known by the common name longstem waterwort.

Its native range is Temperate and Subtropical Old World to Western Malesia.

In New England, it's regarded as introduced and has been documented in both Massachusetts and Maine and it is found primarily around rivers.