| Sabadilla drummondii (A. Gray ex Torr.) Kuntze, 1891 |
| Sabadilla intermedia (Baker) Kuntze, 1891 |
| Sabadilla officinalis (Schltdl. & Cham.) Standl., 1925 |
| Sabadilla officinarum Schltdl., 1844 |
| Salomonia Heist. ex Fabr., 1759 |
| Salomonia commutata (Schult. & Schult. f.) Farw., 1900 |
| Schoenoprasum Kunth, 1816 |
| Schoenoprasum lineare Kunth, 1815 |
| Schoenoprasum longifolium Kunth, 1815 |
| Skoinolon Raf., 1838 |
| Skoinolon officinale (Schltdl. & Cham.) Farw., 1918 |
| Toxicoscordion Rydb., 1903 |
| Toxicoscordion brevibracteatus (M.E. Jones) R.R. Gates, 1918 |
| Toxicoscordion fremontii (Torr.) Rydb., 1903 |
| Toxicoscordion paniculatum (Nutt.) Rydb., 1903 |
| Toxicoscordion venenosum (S. Watson) Rydb., 1903 |
| Unifolium Ludw., 1757 |
| Unifolium amplexicaule (Nutt.) Greene, 1894 |
| Unifolium liliaceum Greene, 1889 |
| Unifolium sessilifolium (Nutt. ex Baker) Greene, 1888 |