| Hedyotis spellenbergii G.L. Nesom & Vorobik, 1988 |
| Hedyotis spinescens Sessé & Moc., 1893 |
| Hedyotis teretifolia (Terrell) G.L. Nesom, 1988 |
| Hedyotis terrellii Lorence, 1997 |
| Hedyotis umbratilis (B.L. Rob.) W.H. Lewis, 1961 |
| Hedyotis vergrandis W.H. Lewis, 1961 |
| Hedyotis watsonii W.H. Lewis, 1961 |
| Hedyotis wrightii (A. Gray) Fosberg, 1941 |
| Hedyotis xestosperma (B.L. Rob. & Greenm.) W.H. Lewis, 1961 |
| Hemidiodia K. Schum., 1888 |
| Hemidiodia ocimifolia (Willd.) K. Schum., 1888 |
| Hexasepalum Bartl. ex DC., 1830 |
| Hexasepalum angustifolium Bartl. ex DC., 1830 |
| Hexasepalum apiculatum (Willd.) Delprete & J.H. Kirkbr., 2015 |
| Hexasepalum sarmentosum (Sw.) Delprete & J.H. Kirkbr., 2015 |
| Hexasepalum teres (Walter) J.H. Kirkbr., 2014 |
| Higginsia Pers., 1805 |
| Higginsia macrophylla Planch., 1849 |
| Higginsia mexicana Link, Klotzsch & Otto, 1841 |
| Higginsia psychotriifolia Benth., 1853 |