| Hedeoma plicata Torr., 1859 |
| Hedeoma pringlei Briq., 1898 |
| 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 tenella Hemsl., 1882 |
| Hedeoma tenuiflora Brandegee, 1908 |
| Hedeoma tenuipes Epling, 1939 |
| Hedyosmos Mitch., 1769 |
| Hedyosmos leucanthus Kuntze, 1891 |
| Hemistegia Raf., 1837 |
| Hemistegia mexicana (L.) Raf., 1837 |
| Hesperozygis Epling, 1936 |
| Hesperozygis bella Epling, 1940 |
| Hesperozygis marifolia (S. Schauer) Epling, 1939 |
| Holmskioldia Retz., 1791 |
| Holmskioldia sanguinea Retz., 1791 |
| Holwaya Ramamoorthy, 1984 |