| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
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| Menyanthaceae | Nymphoides aquatica | Big Floating Heart, Banana Floating Heart | Limesink ponds (dolines), other acidic and nutrient-poor water-filled depressions, sluggish streams, beaverponds, primarily in the Outer and Middle Coastal Plain. | A Southeastern Coastal Plain endemic: NJ south to FL and west to TX. | 
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| Menyanthaceae | Nymphoides cordata | Little Floating Heart | Upland depression ponds, sluggish streams, beaverponds, primarily in the fall-line Sandhills. | NL (Newfoundland) and ON south MD; disjunct in the Coastal Plain of NC and SC; disjunct from sw. GA and Panhandle FL west to e. LA. | 
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| Menyanthaceae | Nymphoides cristata | Crested Floating Heart, Water Snowflake | Ponds and lakes. | Native of China and India. Apparently first naturalizing in North America in FL in 2000; introduced for water gardens and aquariums, and considered a noxious aquatic weed in our area. | 
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| Menyanthaceae | Nymphoides grayana | Bahama Floating Heart | Ponds. | C. peninsular FL (Tippery, Les, & Peredo 2015) south to Lee County; Bahamas; e. Cuba. | 
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| Menyanthaceae | Nymphoides humboldtiana | | Lakes, ponds, and other sluggish water. | FL; West Indies; Mexico (CHP, VER), Central America, and South America. | 
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| Menyanthaceae | Nymphoides indica | Water Snowflake | Ponds. | Native of the Paleotropics. | 
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| Menyanthaceae | Nymphoides peltata | Yellow Floating Heart | Ponds. | Native of Europe. This European native is sparingly naturalized in e. North America; it is sold for cultivation in water gardens, and will likely become more widely naturalized. Reported as established in Calhoun County, AL (Barger et al. 2023). | 
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