| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Polygonaceae | Acetosa | Sorrel, Sour Dock |  (c) Sorrie, Bruce A. - CC-BY | ||
| Polygonaceae | Antigonon | Love-chain, Coralvine, Corallita |  (c) Bradley, Keith | ||
| Polygonaceae | Brunnichia | Buckwheat-vine |  (c) Sorrie, Bruce A. - CC-BY | ||
| Polygonaceae | Coccoloba | Pigeon-plum, Sea-grape |  (c) Cressler, Alan M. | ||
| Polygonaceae | Emex | Emex, Devil’s-thorn, Cape Spinach |  (c) Basden, Millie - CC-BY | ||
| Polygonaceae | Eriogonum | Wild-buckwheat |  (c) Fleming, Gary P. | ||
| Polygonaceae | Fagopyrum | Buckwheat |  (c) Fleming, Gary P. | ||
| Polygonaceae | Fallopia | Climbing Buckwheat |  (c) Fleming, Gary P. | ||
| Polygonaceae | Koenigia | ||||
| Polygonaceae | Muehlenbeckia |  (c) Weakley, Alan - CC0 | |||
| Polygonaceae | Parogonum |  (c) Fleming, Gary P. | |||
| Polygonaceae | Persicaria | Smartweed, Tearthumb, Jumpseed |  (c) Fleming, Gary P. | ||
| Polygonaceae | Polygonella | Jointweed |  (c) Fleming, Gary P. | ||
| Polygonaceae | Polygonum | Knotweed |  (c) Zharkikh, Andrey - CC-BY-NC, permission granted to NCBG | ||
| Polygonaceae | Reynoutria |  (c) Sorrie, Bruce A. - CC-BY | |||
| Polygonaceae | Rheum | Rhubarb |  (c) Campbell, Ali - CC-BY | ||
| Polygonaceae | Rumex | Dock |  (c) Fleming, Gary P. | ||
| Polygonaceae | Triplaris |