Species PlantsAmerican Spatterdock

American Spatterdock

Nuphar advena

CommonPlant
Illustration of American Spatterdock (Nuphar advena)

American Spatterdock is a native aquatic plant of shallow ponds, slow streams, and tidal marshes in eastern North America, producing distinctive cup-shaped yellow flowers that rise just above the water surface on stout stems. Unlike true water lilies, its flower petals are actually large sepals, and the real petals are small and inconspicuous within the cup. Muskrats heavily consume the starchy rhizomes, creating open channels through dense stands. The plant's broad floating leaves provide shade and shelter for fish, frogs, and turtles.

Habitat
Shallow ponds, tidal marshes, slow-moving streams, lake shallows
Diet
Rhizomes eaten by muskrats and beavers; leaves grazed by white-tailed deer; flowers visited by beetles and bees
How common
Common

Best time to see a American Spatterdock

The best time to see a American Spatterdock is March–July, when about 61% of U.S. sightings happen, based on 11,044 research-grade iNaturalist observations.

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