| Asteraceae |
|
Rudbeckia triloba
| L. | Sp. Pl. 2: 907 | 1753 |
| Asteraceae |
|
Rudbeckia triloba var. beadlei
| (Small) Fernald | Rhodora 39(467): 458 | 1937 |
| Asteraceae |
|
Rudbeckia triloba var. pinnatiloba
| Torr. & A. Gray | Fl. N. Amer. 2(2): 309 | 1842 |
| Asteraceae |
|
Rudbeckia triloba var. rupestris
| (Chick.) A. Gray | Syn. Fl. N. Amer. 1(2): 260 | 1884 |
| Asteraceae |
|
Rudbeckia triloba var. triloba
| | | |