| Hemarthria fasciculata (Lam.) Kunth, 1829 |
| Hemarthria fasciculata var. gracilis Balansa, 1874 |
| Hemarthria guyanensis Steud., 1854 |
| Hemarthria peruviana Steud., 1840 |
| Hemibromus Steud., 1854 |
| Hemigymnia Griff., 1842 |
| Hemigymnia malabarica (L.) Henrard, 1930 |
| Hemimunroa (Parodi) Parodi, 1937 |
| Hemisacris Steud., 1829 |
| Hemisacris gonatodes Steud., 1829 |
| Henrardia C.E. Hubb., 1946 |
| Heptaseta Koidz., 1933 |
| Hesperochloa (Piper) Rydb., 1912 |
| Hesperostipa (M.K. Elias) Barkworth, 1993 |
| Hesperostipa M.K. Elias, 1942 |
| Hesperostipa comata (Trin. & Rupr.) Barkworth, 1993 |
| Hesperostipa neomexicana (Thurb.) Barkworth, 1993 |
| Hesperostipa saxicola (Hitchc.) Valdés-Reyna & Barkworth, 2003 |
| Heterochloa Desv., 1831 |
| Heterolepis Ehrenb. ex Boiss., 1884 |