| Hedyosmos lythrifolius (Benth.) Kuntze, 1891 |
| Hedyosmos polyanthus (Benth.) Kuntze, 1782 |
| Hedyosmos secundus (S. Watson) Kuntze, 1891 |
| Hedyosmos stachyodes (M. Martens & Galeotti) 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 |
| Horminum L., 1753 |
| Horminum caulescens Ortega, 1798 |
| Horminum coccineum (Buc'hoz ex Etl.) Moench, 1794 |
| Hypenia (Mart. ex Benth.) Harley, 1988 |
| Hypenia violacea Mart. Gord. & S. Valencia, 2009 |
| Hyptis Jacq., 1787 |
| Hyptis acuta Benth., 1831 |
| Hyptis albida Kunth, 1818 |