Assertion: white water lily | /r/HasProperty | nymphaea odorataa aiton
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text: Even native species, like the American white water lily (Nymphaea odorataa aiton), can sometimes become overgrown and choke up ponds and lakes with their extensive mat-like rhizome root systems, consequently out-competing other vegetation, impeding fish movement, depleting dissolved oxygen, and over time lessening biodiversity.