| Author | L. | |
| Distribution | Scattered across the northern part of the state, from the Mountains to the northeastern Coastal Plain. Specimens at SERNEC from Dare County are P. perfoliatus instead.
Native of Europe; in N.A. nearly throughout the U.S. and southern Canada. | |
| Abundance | Rare, as far as is known. Expected elsewhere. | |
| Habitat | Impoundments, slow-moving rivers, fish hatchery (McDowell Co.). | |
| Phenology | | |
| Identification | Curly Pondweed has no floating leaves. Submersed leaves are linear to narrowly elliptic, 1.5-3.5 inches long; margins are very wavy. Leaves of P. perfoliatus are much shorter, relatively wider, and much less wavy. | |
| Taxonomic Comments | | |
| Other Common Name(s) | | |
| State Rank | SE * | |
| Global Rank | G5 | |
| State Status | | |
| US Status | | |
| USACE-agcp | OBL link |
| USACE-emp | OBL link |
