| Rudbeckia auriculata (Perdue) Kral |
Accepted |
18 |
| Rudbeckia bicolor Nutt. |
Accepted |
19 |
| Rudbeckia californica A. Gray |
Accepted |
18 |
| Rudbeckia fulgida Aiton |
Accepted |
15 |
| Rudbeckia fulgida var. fulgida |
Accepted |
19 |
| Rudbeckia fulgida var. palustris (Eggert) Perdue |
Accepted |
19 |
| Rudbeckia fulgida var. sullivantii (C. L. Boynton & Beadle) Cronquist |
Accepted |
38 |
| Rudbeckia fulgida var. umbrosa (C. L. Boynton & Beadle) Cronquist |
Accepted |
38 |
| Rudbeckia glaucescens Eastw. |
Accepted |
18 |
| Rudbeckia graminifolia (Torr. & A. Gray) C. L. Boynton & Beadle |
Accepted |
19 |
| Rudbeckia grandiflora (Sweet) DC. |
Accepted |
19 |
| Rudbeckia grandiflora var. alismifolia (Torr. & A. Gray) Cronquist |
Accepted |
19 |
| Rudbeckia hirta L. |
Accepted |
19 |
| Rudbeckia hirta var. angustifolia (T. V. Moore) Perdue |
Accepted |
19 |
| Rudbeckia hirta var. pulcherrima Farw. |
Accepted |
19 |
| Rudbeckia klamathensis P. B. Cox & Urbatsch |
Accepted |
18 |
| Rudbeckia laciniata L. |
Accepted |
27 |
| Rudbeckia laciniata var. ampla (A. Nelson) Cronquist |
Accepted |
19 |
| Rudbeckia maxima Nutt. |
Accepted |
18 |
| Rudbeckia missouriensis Engelm. ex C. L. Boynton & Beadle |
Accepted |
19 |
| Rudbeckia mohrii A. Gray |
Accepted |
18 |
| Rudbeckia mollis Elliott |
Accepted |
19 |
| Rudbeckia montana A. Gray |
Accepted |
18 |
| Rudbeckia nitida Nutt. |
Accepted |
18 |
| Rudbeckia occidentalis Nutt. |
Accepted |
18 |
| Rudbeckia scabrifolia L. E. Br. |
Accepted |
18 |
| Rudbeckia subtomentosa Pursh |
Accepted |
19 |
| Rudbeckia texana (Perdue) P. B. Cox & Urbatsch |
Accepted |
18 |
| Rudbeckia triloba L. |
Accepted |
19 |
| Rudbeckia triloba var. triloba |
Accepted |
19 |
| Rudbeckia amplexicaulis Vahl |
Unresolved |
16 |
| Rudbeckia flava Greene |
Unresolved |
19 |
| Rudbeckia fulgida Meehan |
Unresolved |
19 |
| Rudbeckia purpurea L. |
Synonym of Echinacea purpurea (L.) Moench |
11 |
| Dracopis amplexicaulis (Vahl) Cass. ex Less. |
Synonym of Rudbeckia amplexicaulis Vahl |
16 |
| Rudbeckia amplexicaulis |
Synonym of Rudbeckia amplexicaulis Vahl |
16 |
| Rudbeckia californica var. californica |
Synonym of Rudbeckia californica A. Gray |
18 |
| Rudbeckia speciosa Wender. |
Synonym of Rudbeckia fulgida Aiton |
15 |
| Rudbeckia californica var. glauca S. F. Blake |
Synonym of Rudbeckia glaucescens Eastw. |
18 |
| Rudbeckia grandiflora |
Synonym of Rudbeckia grandiflora (Sweet) DC. |
19 |
| Rudbeckia grandiflora var. alismifolia None |
Synonym of Rudbeckia grandiflora var. alismifolia (Torr. & A. Gray) Cronquist |
19 |
| Rudbeckia hirta var. hirta |
Synonym of Rudbeckia hirta L. |
19 |
| Rudbeckia serotina Nutt. |
Synonym of Rudbeckia hirta L. |
19 |
| Rudbeckia laciniata var. laciniata |
Synonym of Rudbeckia laciniata L. |
27 |
| Rudbeckia missouriensis Engelm. |
Synonym of Rudbeckia missouriensis Engelm. ex C. L. Boynton & Beadle |
19 |
| Rudbeckia missouriensis None |
Synonym of Rudbeckia missouriensis Engelm. ex C. L. Boynton & Beadle |
19 |
| Rudbeckia subtomentosa |
Synonym of Rudbeckia subtomentosa Pursh |
19 |
| Rudbeckia nitida var. texana Perdue |
Synonym of Rudbeckia texana (Perdue) P. B. Cox & Urbatsch |
18 |
