| Hedeoma permixta Briq., 1898 |
| Hedeoma piperita Benth., 1835 |
| Hedeoma piperita var. oblongifolia A. Gray, 1872 |
| Hedeoma plicata Torr., 1859 |
| Hedeoma pringlei Briq., 1898 |
| Hedeoma pulchella Greene, 1906 |
| Hedeoma pusilla (R.S. Irving) R.S. Irving, 1971 |
| Hedeoma quercetorum Epling, 1939 |
| Hedeoma quinquenervata Bartlett, 1909 |
| Hedeoma rotundifolia Hemsl., 1882 |
| Hedeoma rzedowskii B.L. Turner, 1994 |
| Hedeoma salomeae J.G. González, P. Velázquez & M.A. Martínez, 2025 |
| Hedeoma sancta Small, 1899 |
| Hedeoma tenella Hemsl., 1882 |
| Hedeoma tenuiflora Brandegee, 1908 |
| Hedeoma tenuipes Epling, 1939 |
| Hedeoma thymoides A. Gray, 1878 |
| Hedeoma thymoides var. oblongifolia (A. Gray) A. Gray, 1878 |
| Hedyosmos Mitch., 1769 |
| Hedyosmos leucanthus Kuntze, 1891 |