| Stenocephalum Sch. Bip., 1863 |
| Stenocephalum jucundum (Gleason) H. Rob., 1987 |
| Stenotus Nutt., 1841 |
| Stenotus pulvinatus (Moran) G.L. Nesom, 1989 |
| Stephanodoria Greene, 1895 |
| Stephanodoria tomentella (B.L. Rob.) Greene, 1895 |
| Stephanomeria Nutt., 1841 |
| Stephanomeria diegensis Gottlieb, 1972 |
| Stephanomeria exigua Nutt., 1841 |
| Stephanomeria exigua subsp. exigua Nutt., 1841 |
| Stephanomeria exigua var. deanei J.F. Macbr., 1918 |
| Stephanomeria exigua var. exigua Nutt., 1841 |
| Stephanomeria guadalupensis Brandegee, 1903 |
| Stephanomeria mexiae M.E. Jones, 1933 |
| Stephanomeria minima M.E. Jones, 1930 |
| Stephanomeria monocephala Moran, 1969 |
| Stephanomeria pauciflora (Torr.) A. Nelson, 1909 |
| Stephanomeria schottii (A. Gray) A. Gray, 1876 |
| Stephanomeria tenuifolia (Raf.) H.M. Hall, 1907 |
| Stephanomeria thurberi A. Gray, 1854 |