| Hormidium miserum (Lindl.) Benth. & Hook. f., 1880 |
| Hormidium panthera (Rchb. f.) Brieger, 1977 |
| Hormidium pseudopygmaeum Finet, 1899 |
| Hormidium pulchellum (A. Rich. & Galeotti) Benth. & Hook. f., 1880 |
| Hormidium pygmaeum (Hook.) Benth. & Hook. f. ex Hemsl., 1881 |
| Hormidium tripterum (Brongn.) Cogn., 1898 |
| Hormidium uniflorum (Lindl.) Heynh., 1841 |
| Houlletia Brongn., 1841 |
| Houlletia tigrina Linden ex Lindl. & Paxton, 1853 |
| Huntleya Bateman ex Lindl., 1837 |
| Huntleya imbricata Hamb. ex Rchb. f., 1852 |
| Ibidium Salisb. ex Small, 1913 |
| Ibidium crystalligerum Salisb., 1812 |
| Ibidium lucayanum Britton, 1909 |
| Ibidium quinquelobatum (Poir.) Acuña, 1939 |
| Ibidium strictum (Rydb.) House, 1905 |
| Ibidium tortile House, 1906 |
| Ionopsis Kunth, 1816 |
| Ionopsis brevifolia A. Rich. & Galeotti, 1845 |
| Ionopsis longicaulis L.O. Williams, 1962 |