| Scutellaria racemosa Pers., 1806 |
| Scutellaria rosei Fernald, 1900 |
| Scutellaria russelioides Epling, 1939 |
| Scutellaria saxicola Brandegee, 1909 |
| Scutellaria seleriana Loes., 1899 |
| Scutellaria serboana B.L. Turner, 2011 |
| Scutellaria sipilensis Cuevas, 2010 |
| Scutellaria splendens Link ex Klotzsch & Otto, 1841 |
| Scutellaria stachyoides Epling, 1939 |
| Scutellaria stewartii B.L. Turner, 1994 |
| Scutellaria sublitoralis J.G. González, 2013 |
| Scutellaria suffrutescens S. Watson, 1890 |
| Scutellaria texana B.L. Turner, 1994 |
| Scutellaria tuberosa Benth., 1834 |
| Scutellaria versicolor Nutt., 1818 |
| Scutellaria vitifolia Brandegee, 1924 |
| Scutellaria wendtii Henrickson, 1990 |
| Scutellaria wrightii A. Gray, 1872 |
| Scutellarioideae Prantl, 1880 |
| Sigmoideae Epling, 1833 |