Yellow_pond-lily
Nuphar advena
Species of aquatic plant
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]