| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
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| Polygonaceae | Acetosa acetosella | Red Dock, Sheep Sorrel, Sourgrass, Field Sorrel | Pastures, fields, roadsides, rock outcrops, grassy balds, gardens. | Native of Eurasia. Variation in Acetosa acetosella has been studied in considerable detail in Eurasia, and a number of infrataxa named; the application of these to North American material is unclear at this time. | 
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| Polygonaceae | Acetosa bucephalophora | Horned Dock, Red Dock, Ruby Dock | Ballast, other disturbed areas. | Native of Mediterranean Europe, Africa, and w. Asia. | |
| Polygonaceae | Acetosa hastatula | Wild Dock, Heartwing Dock | Glades, barrens, xeric sands; eastwards in fields (especially sandy fields or dunes in the Coastal Plain), roadsides, disturbed areas. | E. MA, NY, IN, IL, MO, and KS, south to c. peninsular FL, TX, and NM. The eastern part of the distribution seems to be strictly or mostly in altered habitats, suggesting the possibility that the eastern extent (east of the Mississippi River) of the distribution is adventive. | 
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| Polygonaceae | Acetosa pratensis | Garden Sorrel, Green Sorrel | Gardens, disturbed areas. | Native of Eurasia, introduced and weakly naturalized as a weed at least far south as se. PA (Rhoads & Block 2007) and s. NJ (Kartesz 2010). | 
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