Which plant displays leaves with coarse teeth on the margin that can be rough to the touch?

The leaves of hydrilla (Hydrilla verticillata) are indeed characterized by their finely serrated edges, which can have coarse teeth along the margins. This specific leaf morphology not only aids in distinguishing hydrilla from other aquatic plants but also contributes to its unique tactile quality, as the roughness can be felt when touched. Hydrilla is a submerged aquatic plant known for its aggressive growth and ability to create dense mats in water bodies, significantly impacting local ecosystems.

In contrast, while Brazilian elodea and pickerelweed may have different leaf structures and textures, they do not exhibit the same coarse, serrated margins that describe the texture of hydrilla. Water hyacinth has distinct rounded leaves with a smooth surface, further differentiating it from the rough, serrated leaves of hydrilla. Understanding these distinctions is crucial for effective identification and management of aquatic plants within Florida's ecosystems.