| Canada Wildrye | Elymus | canadensis | | 8 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Southeastern Wildrye (australis) | Elymus | glabriflorus var. australis | | 5 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Southeastern Wildrye | Elymus | glabriflorus | | 5 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Southeastern Wildrye (glabriflorus) | Elymus | glabriflorus var. glabriflorus | | 28 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Eastern Bottlebrush Grass | Elymus | hystrix | | 211 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Early Wildrye | Elymus | macgregorii | | 11 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Quackgrass | Elymus | repens | | 17 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Riverbank Wildrye | Elymus | riparius | | 13 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Downy Wildrye | Elymus | villosus var. villosus | | 0 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Hairy Wildrye | Elymus | villosus | | 31 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Virginia Wildrye | Elymus | virginicus | | 159 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Saltmarsh Virginia Wildrye (halophilus) | Elymus | virginicus var. halophilus | | 0 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Virginia Wildrye (virginicus) | Elymus | virginicus var. virginicus | | 12 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |
| Intermediate Virginia Wildrye (intermedius) | Elymus | virginicus var. intermedius | | 1 | Grasses | Poaceae | Poales | Magnoliopsida | Plantae |