| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Pontederiaceae | Heteranthera dubia | Water Stargrass | Streams, rivers, lakes, reservoirs, especially in areas with calcareous substrates. | Québec west to Washington, south to Cuba and Central America, but rare or absent in much of the se. United States. The attribution of this species to South Carolina is in error (as by Kartesz 1999), based on a misidentified specimen (C. Horn, pers. comm.). |  (c) Ward, Scott G |
| Pontederiaceae | Heteranthera limosa | Blue Mud-Plantain | Shallow water and muddy shores of rivers, ponds, lakes, and reservoirs, wet ditches, agricultural fields, other wet areas. | Kentucky, Minnesota, South Dakota, and Colorado, south to Alabama (Diamond & Woods 2009), Mississippi, Louisiana, Texas, and Arizona; Mexico, Central and South America, West Indies. Attributed to Virginia in Small (1933), but the documentation is not known. |  (c) Bradley, Keith |
| Pontederiaceae | Heteranthera mexicana | Mexican Mud-Plantain | In ditches and ponds, apparently ephemeral in appearance depending on rainfall. | N. and s. Texas south into Mexico. |  © Adam Black |
| Pontederiaceae | Heteranthera missouriensis | Mississippi Mud-Plantain, Missouri Mud-Plantain | In shallow, stagnant water in floodplains, or emersed on mud, also ditches. | Illinois west to Nebraska, south to Mississippi, centered in the Mississippi River Alluvial Plain. |  © Nathan Aaron |
| Pontederiaceae | Heteranthera pauciflora | Atlantic Mud-Plantain, Few-flowered Mud-Plantain | In shallow, stagnant water in floodplains (including freshwater tidal), or emersed on mud. | On the Atlantic Coastal Plain from New Jersey south through Pennsylvania to ne. North Carolina |  (c) Keim, Bill - CC-BY |
| Pontederiaceae | Heteranthera reniformis | Kidneyleaf Mud-Plantain | In shallow, stagnant water in floodplains, or emersed on mud. | Connecticut west to Nebraska, south to Florida and Texas and into South America; West Indies. First reported for South Carolina by Hill & Horn (1997). |  (c) Hartley, Nate - CC-BY-NC, permission granted to NCBG |
| Pontederiaceae | Heteranthera rotundifolia | Roundleaf Mud-Plantain | Ponds. | Kentucky (Larue County; Medley 1993), Illinois, nw. Iowa, sw. Minnesota, South Dakota, n. Colorado, and California south to n. Arkansas, se. Texas, New Mexico, and Mexico and Central America; West Indies. |  © Nathan Aaron |