Potamogeton zosteriformis, commonly known as grass-wrack pondweed, is a perennial aquatic plant that thrives in still or slowly-flowing, nutrient-rich freshwater environments such as lakes, ponds, and slow-moving streams. It is native to North America, particularly favoring habitats with fine substrates like sand or silt. The plant features a strongly flattened, branching stem that can grow up to 35 inches long, and it is submerged in its aquatic habitat. The long, grass-like leaves are olive-green or dark green, typically with two veins running parallel to the midrib, which is a distinctive characteristic of the species.

Grass-wrack pondweed’s inflorescences are relatively inconspicuous, with small flowers that are not particularly showy. Despite its modest appearance, this plant plays a crucial role in aquatic ecosystems by providing habitat and food for aquatic wildlife. It is not commonly cultivated, but when it is, it requires an aquatic setting that mimics its natural habitat. Grass-wrack pondweed is threatened in many areas due to habitat destruction and water pollution. It is important for conservation efforts to maintain the health of aquatic ecosystems where this species is native.CC BY-SA 4.0