[The Water Lily Family West of the Cascade Mountains of Oregon and Washington]
Rocky Mountain Pond-lily, Spatterdock, Wakas, Yellow Pond Lily, Yellow Water-lily
Nuphar polysepala
Synonyms: Nuphar lutea, Nuphar lutea ssp. polysepala, Nuphar polysepalum, Nymphaea polysepala, Nymphozanthus polysepalus

Yellow water-lily blooming in the shallow waters of Bigelow Lake, Siskiyou National Forest.........July 14, 2012.
- 
Yellow water-lily blooming in the shallow waters of Bigelow Lake, Siskiyou National Forest.........July 14, 2012.
Paul Slichter