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Family	Scientific Name	Common Name	Habitat	Distribution
Pontederiaceae	Heteranthera dubia	Water Stargrass	Streams, rivers, lakes, reservoirs, especially in areas with calcareous substrates.	QC west to WA, south to Cuba and Central America, but rare or absent in much of the se. United States. The attribution of this species to SC is in error (as by Kartesz 1999), based on a misidentified specimen (C. Horn, pers. comm.).
Pontederiaceae	Heteranthera limosa	Blue Mud-Plantain	Shallow water and muddy shores of rivers, ponds, lakes, and reservoirs, wet ditches, agricultural fields, other wet areas.	KY, MN, SD, and CO, south to AL (Diamond & Woods 2009), MS, LA, TX, and AZ; Mexico, Central and South America, West Indies. Attributed to VA in Small (1933), but the documentation is not known.
Pontederiaceae	Heteranthera mexicana	Mexican Mud-Plantain	In ditches and ponds, apparently ephemeral in appearance depending on rainfall.	N. and s. TX south into Mexico.
Pontederiaceae	Heteranthera missouriensis	Mississippi Mud-Plantain, Missouri Mud-Plantain	In shallow, stagnant water in floodplains, or emersed on mud, also ditches.	IL west to NE, south to MS, centered in the Mississippi River Alluvial Plain.
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 NJ south through PA to ne. NC
Pontederiaceae	Heteranthera reniformis	Kidneyleaf Mud-Plantain	In shallow, stagnant water in floodplains, or emersed on mud.	CT west to NE, south to FL and TX and into South America; West Indies. First reported for SC by Hill & Horn (1997).
Pontederiaceae	Heteranthera rotundifolia	Roundleaf Mud-Plantain	Ponds.	KY (Larue County; Medley 1993), IL, nw. IA, sw. MN, SD, n. CO, and CA south to n. AR, se. TX, NM, and Mexico and Central America; West Indies.

Family

Scientific Name

Common Name

Habitat

Distribution

Image

Pontederiaceae

Heteranthera dubia

Water Stargrass

Streams, rivers, lakes, reservoirs, especially in areas with calcareous substrates.

QC west to WA, south to Cuba and Central America, but rare or absent in much of the se. United States. The attribution of this species to SC is in error (as by Kartesz 1999), based on a misidentified specimen (C. Horn, pers. comm.).

Pontederiaceae

Heteranthera limosa

Blue Mud-Plantain

Shallow water and muddy shores of rivers, ponds, lakes, and reservoirs, wet ditches, agricultural fields, other wet areas.

KY, MN, SD, and CO, south to AL (Diamond & Woods 2009), MS, LA, TX, and AZ; Mexico, Central and South America, West Indies. Attributed to VA in Small (1933), but the documentation is not known.