| Carex vitrea Holm, 1904 |
| Carex vizarronensis Gómez-Sánchez, Cabrera-Luna, S. González & Reznicek, 2012 |
| Carex volcanica F.J. Herm., 1971 |
| Carex vulpinoidea Michx., 1803 |
| Carex wootonii Mack., 1915 |
| Carex xalapensis Kunth, 1837 |
| Cariceae Dumort., 1827 |
| Chaetocyperus Nees, 1834 |
| Chaetocyperus acicularis (L.) Nees, 1842 |
| Chaetocyperus bonariensis (Nees) Nees, 1842 |
| Chaetocyperus jamesonii Steud., 1854 |
| Chaetocyperus membranaceus Buckley, 1862 |
| Chaetocyperus niveus Liebm., 1850 |
| Chaetocyperus polymorphus Lindl. & Nees ex Nees, 1842 |
| Chaetocyperus rugulosus Nees, 1855 |
| Chaetocyperus stoloniferus Nees, 1847 |
| Chaetocyperus urceolatus Liebm., 1850 |
| Chaetospora R. Br., 1810 |
| Chaetospora globosa Kunth, 1815 |
| Chaetospora pterocarpa Kunth, 1815 |