| Apiaceae |
|
Thaspium barbinode
| (Michx.) Nutt. | Gen. N. Amer. Pl. 1: 196 | 1818 |
| Apiaceae |
|
Thaspium barbinode var. angustifolium
| J.M. Coult. & Rose | Bot. Gaz. 12(6): 137 | 1887 |
| Apiaceae |
|
Thaspium barbinode var. barbinode
| | | |
| Apiaceae |
|
Thaspium barbinode var. chapmanii
| J.M. Coult. & Rose | Contr. U.S. Natl. Herb. 7(1): 148 | 1900 |
| Apiaceae |
|
Thaspium barbinode var. garmanii
| J.M. Coult. & Rose | Contr. U.S. Natl. Herb. 7(1): 148 | 1900 |
| Apiaceae |
|
Thaspium barbinode var. pinnatifidum
| J.M. Coult. & Rose | Rev. N. Amer. Umbell. 84 | 1888 |