| 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 |
| Heteropogon Pers., 1807 |
| Heteropogon acuminatus Trin., 1832 |
| Heteropogon besukiensis (Steud.) Miq., 1857 |
| Heteropogon contortus (L.) P. Beauv. ex Roem. & Schult., 1817 |
| Heteropogon contortus var. hirtus (J. Presl) Fenzl ex Hack., 1883 |
| Heteropogon firmus J. Presl, 1830 |
| Heteropogon glaber Pers., 1807 |
| Heteropogon hirtus (L.) Andersson ex Schweinf., 1867 |
| Heteropogon melanocarpus (Elliott) Benth., 1881 |
| Heteropogon melanocarpus (Muhl.) Coult., 1894 |