Nuphar polysepala
Nymphaeaceae
Yellow Pond Lily
Leaves arise directly from underwater root system and float or arise above water. Leaves 4–18 in. long, heart-shaped. Cup-shaped flowers float or rise above water, are about 4 in. across, yellow, often tinted green or red. Flower center includes large, bright yellow disk-like stigma surrounded by yellow or red-tinged stamens. Found in shallow ponds and slow streams usually 2–10 ft. deep at elevations below treeline.
- Rarity: Common
- Flowering Time: Mid Summer
- Flower Form: Aquatic plants
- Life Cycle: Perennial
- Habitat: Lake/Pond
- Found In: Columbia Basin, Crater Lake NP, East Gorge, Mt. Rainier NP, N Cascades NP, Olympic NP, Siskiyous, Steens, Wallowas, West Gorge
- Native: Yes
- Also Known As: Spatterdock, Cow-Lily
- Latin Synonyms: Nuphar lutea ssp. polysepala
