| Calandrinia Kunth, 1823 |
| Calandrinia acaulis Kunth, 1823 |
| Calandrinia andrewsii (Sweet) Sweet, 1830 |
| Calandrinia breweri S. Watson, 1876 |
| Calandrinia ciliata (Ruiz & Pav.) DC., 1828 |
| Calandrinia ciliata var. menziesii (Hook.) J.F. Macbr., 1931 |
| Calandrinia maritima Nutt., 1838 |
| Calandrinia megarhiza Hemsl., 1879 |
| Calandrinia menziesii (Hook.) Torr. & A. Gray, 1838 |
| Calandrinia mexicana (Rydb.) Pax & Ralph Hoffm., 1934 |
| Calandrinia micrantha Schltdl., 1838 |
| Calyptridium Nutt., 1838 |
| Calyptridium monandrum Nutt., 1838 |
| Calyptridium monospermum Greene, 1895 |
| Calyptridium parryi A. Gray, 1887 |
| Calyptridium umbellatum (Torr.) Greene, 1886 |
| Cistanthe Spach, 1836 |
| Cistanthe ambigua (S. Watson) Carolin ex Hershk., 1990 |
| Cistanthe guadalupensis (T.R. Dudley) Carolin ex Hershk., 1990 |
| Cistanthe maritima (Nutt.) Hershk., 1990 |