| Klugia azurea Schltdl., 1833 |
| Klugia grandiflora Fritsch, 1926 |
| Koellikeria Regel, 1847 |
| Koellikeria mexicana Matuda, 1956 |
| Kohleria Regel, 1847 |
| Kohleria chiapensis Brandegee, 1914 |
| Kohleria collina Brandegee, 1914 |
| Kohleria deppeana (Schltdl. & Cham.) Fritsch, 1894 |
| Kohleria deppeana var. lasiantha (Zucc.) Fritsch, 1913 |
| Kohleria elegans (Decne.) Loes., 1899 |
| Kohleria filisepala Standl., 1940 |
| Kohleria fruticosa Brandegee, 1914 |
| Kohleria hirsuta (Kunth) Regel, 1848 |
| Kohleria lanata Lem., 1861 |
| Kohleria longifolia (Lindl.) Hanst., 1859 |
| Kohleria maculata C.V. Morton, 1938 |
| Kohleria martensii Fritsch, 1913 |
| Kohleria papillosa (Oerst. & Hanst.) Fritsch, 1913 |
| Kohleria pedunculata Brandegee, 1914 |
| Kohleria rugata (Scheidw.) G. Kvist & L.E. Skog, 1992 |