| Hexalectris grandiflora (A. Rich. & Galeotti) L.O. Williams, 1944 |
| Hexalectris mexicana Greenm., 1903 |
| Hexalectris nitida L.O. Williams, 1944 |
| Hexalectris parviflora L.O. Williams, 1940 |
| Hexalectris revoluta Correll, 1941 |
| Hexalectris spicata (Walter) Barnhart, 1904 |
| Hexalectris spicata var. arizonica (S. Watson) Catling & V.S. Engel, 1993 |
| Hexalectris spicata var. spicata (Walter) Barnhart, 1904 |
| Hexalectris warnockii Ames & Correll, 1943 |
| Hexisea Lindl., 1834 |
| Hexisea bidentata Lindl., 1834 |
| Hexisea bidentata var. imbricata (Lindl.) C. Schweinf., 1952 |
| Hexisea imbricata (Lindl.) Rchb. f., 1862 |
| Hexisea oppositifolia (A. Rich. & Galeotti) Rchb. f., 1862 |
| Hexisea tenuissima H. Wendl. & Kraenzl., 1900 |
| Hintonella Ames, 1938 |
| Hintonella mexicana Ames, 1938 |
| Homalopetalum Rolfe, 1896 |
| Homalopetalum costaricense Schltr., 1923 |
| Homalopetalum kienastti (Rchb. f.) Withner, 1998 |