| Helianthella californica A. Gray |
Accepted |
15 |
| Helianthella castanea Greene |
Accepted |
15 |
| Helianthella mexicana A. Gray |
Accepted |
15 |
| Helianthella microcephala (A. Gray) A. Gray |
Accepted |
15 |
| Helianthella parryi A. Gray |
Accepted |
15 |
| Helianthella quinquenervis (Hook.) A. Gray |
Accepted |
15 |
| Helianthella uniflora (Nutt.) Torr. & A. Gray |
Accepted |
15 |
| Helianthella californica DC. |
Synonym of Helianthella californica A. Gray |
15 |
| Helianthella californica subsp. californica |
Synonym of Helianthella californica A. Gray |
15 |
| Helianthella ciliata DC. |
Synonym of Helianthella ciliata S. F. Blake |
51 |
| Helianthella mexicana var. latifolia Weber |
Synonym of Helianthella gypsophila B. L. Turner |
15 |
| Helianthella quinquenervis None |
Synonym of Helianthella quinquenervis (Hook.) A. Gray |
15 |
| Helianthella uniflora var. douglasii (Torr. & A. Gray) W. A. Weber |
Synonym of Helianthella uniflora (Nutt.) Torr. & A. Gray |
15 |
| Helianthella grandiflora Torr. & A. Gray |
Synonym of Phoebanthus grandiflorus (Torr. & A. Gray) S. F. Blake |
17 |