Which pondweed has grasslike submersed leaves?

Variable Pondweed is identified by its grasslike submersed leaves, which can vary in appearance based on environmental conditions. This species typically has elongated, narrow leaves that mirror the shape and texture of grass, giving it a distinctive appearance when submerged in water. Its adaptability in different habitats also contributes to the variation in its leaf structure.

Floatingleaf Pondweed, in contrast, has broad, floating leaves that are not submersed, while Small Pondweed features leaves that may be narrower but not distinctly grasslike. Widgeongrass, although it has submerged leaves, does not exhibit the same grasslike characteristics as Variable Pondweed. Thus, the defining trait of Variable Pondweed's submersed leaves aligns it with the choice that best describes this specific characteristic.