What distinguishes Spatterdock from Water Lilies?

Spatterdock, also known as Nuphar, is characterized by its distinctive yellow flowers. These flowers are typically cup-shaped and bloom above the water surface, setting them apart from Water Lilies (Nymphaea), which usually have more flat and sometimes fragrant flowers that can vary in color (commonly white, pink, or blue).

The other options refer to physical characteristics that can apply broadly to aquatic plants but are not effective distinguishing features between these two specific genera. For instance, while Water Lilies are known for their heart-shaped leaves, Spatterdock has large, round, and often more robust leaves that rise above the water's surface. Therefore, recognizing the yellow flowers of Spatterdock provides a clear visual identifier that differentiates it from Water Lilies in aquatic ecosystems. Understanding these distinctions is crucial for effective identification and management in the context of aquatic pest control.