| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Asteraceae | Acmella decumbens var. decumbens | Waif on ballast. | Native of South America. Known in our region from a single collection at Camden, New Jersey. |  (c) Castro, Candela - CC-BY | |
| Asteraceae | Acmella pilosa | Hairy Spotflower | Disturbed areas. | Native of Mexico and Central America. |  (c) Hammer, Roger L. |
| Asteraceae | Acmella pusilla | Argentine Spotflower | Lawns, disturbed areas (especially around old seaports). | Native of South America. Known from scattered locations in the se. United States (North Carolina, South Carolina, Georgia, Florida), associated with old seaports, such as Wilmington, North Carolina, Savannah, Georgia, Pensacola and Apalachicola, Florida, and perhaps not well-established at some of the reported locations. Reported as naturalized and "locally common" at a site in Chatham County, Georgia (Carter, Baker, & Morris 2009). |  (c) staff, FLAS Herbarium |
| Asteraceae | Acmella repens | Creeping Spotflower | Floating vegetation mats, blackwater levee and swamp forests, roadsides, streambanks, other moist, open, habitats. | Se. Virginia and e. North Carolina south to s. Florida, west to e. Texas, north in the Mississippi Embayment to w. Tennessee and s. Missouri. Sometimes considered also to be distributed from Mexico south to n. South America (POWO 2024), though FNA has as only in Coahuila south of the United States. The northernmost part of its distribution (e.g. se. Virginia) may be adventive. |  © Scott Ward |