Large Yellow Pond, or Water, Lily; Cow Lily; Spatterdock
Nymphaea advena (Nuphar advena)
Flowers–Yellow or greenish outside, rarely purple tinged, round, depressed, 1-1/2 to 3-1/2 in. across. Sepals 6, unequal, concave, thick, fleshy; petals stamen-like,
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