| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Polygonaceae | Eriogonum alatum var. glabriusculum | Winged Wild-buckwheat | Prairies, rocky hillsides, grasslands. | C. and w. OK, Panhandle TX, and ec. NM. | |
| Polygonaceae | Eriogonum allenii | Shale-barren Wild-buckwheat | Open and sunny situations in shale barrens (and rarely sandstone). | Endemic to shale barrens of w. VA and e. WV. |  |
| Polygonaceae | Eriogonum annuum | Annual Wild-buckwheat | Disturbed areas. | ND and MT south to sw. AR, TX, NM, and n. Mexico (CHH). |  |
| Polygonaceae | Eriogonum floridanum | Scrub Wild-buckwheat | Florida scrub, longleaf pine sandhills. | N. peninsular FL (Marion and Putnam counties) south to c. peninsular FL at the southern end of the Lake Wales Ridge (Highlands county). |  |
| Polygonaceae | Eriogonum greggii | Gregg's Wild-buckwheat | In sparse grasslands and low shrublands on shallow sandy soils over caliche (Carr 2016). | S. TX (Hidalgo and Starr counties) and ne. Mexico (COA, NLE). | |
| Polygonaceae | Eriogonum harperi | Harper's Wild-buckwheat | Limestone glades and barrens. | Endemic of sc. KY, nc. TN, and n. AL. |  |
| Polygonaceae | Eriogonum longifolium | Longleaf Wild-Buckwheat | Calcareous and acidic glades, Coastal Plain sand barrens, calcareous glades (eastern Ozarks), sandy and clayey woodlands. | S. MO and KS south to w. LA, TX, and se. NM. |  |
| Polygonaceae | Eriogonum multiflorum | Heart-sepal Wild-buckwheat, Many-flower Wild-buckwheat | Sandy soils. | Sw. AR and OK south to w. LA and TX. |  |
| Polygonaceae | Eriogonum riograndis | Rio Grande Wild-buckwheat | S. TX. | ||
| Polygonaceae | Eriogonum tomentosum | Sandhill Wild-buckwheat, Southern Wild-buckwheat, Dog-tongue | Longleaf pine sandhills, usually in white sand, primarily in the fall-line Sandhills and on riverine dunes in the middle and upper Coastal Plain. | S. NC (at least formerly) south to c. peninsular FL, west to s. AL. There seems no reason to doubt the label data of an 1890's Biltmore Herbarium collection from Bladen County, NC (Pittillo, Horton, & Herman 1972), as E. tomentosum is fairly common not far away in SC; the species has apparently not been seen in NC since. |  |
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