| Arten: |
| Rudbeckia alpicola Piper |
| Rudbeckia amplexicaulis Vahl |
| Rudbeckia auriculata (Perdue) Kral |
| Rudbeckia bicolor Nutt. |
| Rudbeckia californica A.Gray |
| Rudbeckia fulgida Aiton |
| Rudbeckia fulgida var. deamii (S.F.Blake) Perdue |
| Rudbeckia fulgida var. fulgida Aiton |
| Rudbeckia fulgida var. palustris (Eggert ex C.L.Boynton & Beadle) Perdue |
| Rudbeckia fulgida var. spathulata (Michx.) Perdue |
| Rudbeckia fulgida var. speciosa (Wender.) Perdue |
| Rudbeckia fulgida var. sullivantii (C.L.Boynton & Beadle) Cronquist |
| Rudbeckia fulgida var. umbrosa (C.L.Boynton & Beadle) Cronquist |
| Rudbeckia glaucescens Eastw. |
| Rudbeckia graminifolia (Torr. & A.Gray) C.L.Boynton & Beadle |
| Rudbeckia grandiflora (Sweet) DC. |
| Rudbeckia grandiflora var. alismifolia (Torr. & A.Gray) Cronquist |
| Rudbeckia heliopsidis Torr. & A.Gray |
| Rudbeckia hirta L. |
| Rudbeckia hirta var. angustifolia (T.V.Moore) Perdue |
| Rudbeckia hirta var. floridana (T.V.Moore) Perdue |
| Rudbeckia hirta var. hirta L. |
| Rudbeckia hirta var. pulcherrima Farw. |
| Rudbeckia klamathensis P.B.Cox & Urbatsch |
| Rudbeckia laciniata L. |
| Rudbeckia laciniata var. ampla (A.Nelson) Cronquist |
| Rudbeckia laciniata var. heterophylla (Torr. & A.Gray) Fernald & B.G.Schub. |
| Rudbeckia laciniata var. humilis A.Gray |
| Rudbeckia maxima Nutt. |
| Rudbeckia missouriensis Engelm. ex C.L.Boynton & Beadle |
| Rudbeckia mohrii A.Gray |
| Rudbeckia mollis Elliott |
| Rudbeckia montana A.Gray |
| Rudbeckia newmannii |
| Rudbeckia nitida Nutt. |
| Rudbeckia occidentalis Nutt. |
| Rudbeckia scabrifolia L.E.Br. |
| Rudbeckia subtomentosa Pursh |
| Rudbeckia texana (Perdue) P.B.Cox & Urbatsch |
| Rudbeckia triloba L. |
| Rudbeckia triloba var. pinnatiloba Torr. & A.Gray |
| Rudbeckia triloba var. rupestris (Chick.) A.Gray |
| Rudbeckia triloba var. triloba L. |