| Cosmophyllum K. Koch, 1855 |
| Cosmos Cav., 1791 |
| Cosmos atrosanguineus (Hook. f.) Voss, 1894 |
| Cosmos bipinnatus Cav., 1791 |
| Cosmos carvifolius Benth., 1845 |
| Cosmos caudatus Kunth, 1818 |
| Cosmos chrysanthemifolius Kunth, 1818 |
| Cosmos concolor Sherff, 1932 |
| Cosmos crithmifolius Kunth, 1818 |
| Cosmos deficiens (Sherff) Melchert, 1990 |
| Cosmos diversifolius Otto ex Knowles & Westc., 1838 |
| Cosmos diversifolius var. atrosanguineus Hook. f., 1861 |
| Cosmos diversifolius var. dahlioides (S. Watson) Melchert, 1990 |
| Cosmos diversifolius var. deficiens Sherff, 1964 |
| Cosmos diversifolius var. diversifolius Otto ex Knowles & Westc., 1838 |
| Cosmos diversifolius var. pumilus Sherff, 1929 |
| Cosmos intercedens Sherff, 1964 |
| Cosmos jaliscensis Sherff, 1964 |
| Cosmos juxtlahuacensis Panero & Villaseñor, 1996 |
| Cosmos landii Sherff, 1917 |