| Family | Scientific Name | Common Name | Habitat | Distribution | Image |
|---|---|---|---|---|---|
| Poaceae | Thinopyrum intermedium | Hairy Wheatgrass | Waif in railroad yards. | Native of Europe and w. Asia. Tucker (1996) states that the record in GA is as a waif in a railroad yard. |  |
| Poaceae | Thinopyrum ponticum | Tall Wheatgrass | Disturbed areas, roadsides, waste areas near wool-combing mills, not known to be established or persistent. | Native of Europe and w. Asia. | |
| Poaceae | Thinopyrum pycnanthum | Saltmarsh Wheatgrass, Tick Quackgrass | Ditches, disturbed areas, on ballast. | Native of w. and s. Europe. |  |