spatterdock

Spatterdock, Cow Lily, Yellow Pond Lily

Nuphar lutea (L.) Sm.

Nymphaeaceae (Water Lily Family)

▲ ▼ colonies in shallow water

▲ ▼ flowers (small, yellow, globe-like structures)

Spatterdock, Yellow Water Lily, Cow Lily:

U.S. native creeping perennial plant in the Water Lily family (Nymphaeaceae) that produces thick, spongy rhizomes that spread along pond sediment
Has large, round to heart-shaped or triangular leaves that lay flat on the surface of the water or emerge slightly above it
Has small, globe-like in bud, yellow flowers that can be fragrant (when first opened) to foul-smelling (a few days after opening)
Prefers shallow, still water