Nuphar advena
Scientific classification
Kingdom:	Plantae
Clade:	Tracheophytes
Clade:	Angiosperms
Order:	Nymphaeales
Family:	Nymphaeaceae
Genus:	Nuphar
Section:	Nuphar sect. Astylus
Species:	N. advena
Binomial name
Nuphar advena (Aiton) W.T.Aiton
Synonyms
Nuphar lutea subsp. advena

Nuphar advena (spatterdock or cow lily or yellow pond-lily) is a species of Nuphar native throughout the eastern United States and in some parts of Canada, such as Nova Scotia.^[1][2] It is similar to the Eurasian species N. lutea, and is treated as a subspecies of it by some botanists,^[3] though differing significantly in genetics.^[1]

It is locally naturalized in Britain.^[4]

Uses

Spatterdock was long used in traditional medicine, with the root applied to the skin and/or both the root and seeds eaten for a variety of conditions. The seeds are edible, and can be ground into flour. The root is edible too, but can prove to be incredibly bitter in some plants.^[5]