| Andropogon schlumbergeri E. Fourn., 1885 |
| Andropogon schlumbergeri var. andreae Hack., 1889 |
| Andropogon schoenanthus L., 1753 |
| Andropogon schottii Rupr. ex Hack., 1883 |
| Andropogon schottii var. asperiglumis Hack., 1889 |
| Andropogon schottii var. schottii Rupr. ex Hack., 1883 |
| Andropogon schottii var. schottii subvar. asperiglumis Hack., 1889 |
| Andropogon scoparius Michx., 1803 |
| Andropogon scoparius f. calvescens Fernald, 1943 |
| Andropogon scoparius f. scoparius Michx., 1803 |
| Andropogon scoparius subsp. euscoparius Hack. ex Beal, 1896 |
| Andropogon scoparius subsp. genuinus Hack., 1889 |
| Andropogon scoparius var. ducis Fernald & Griscom, 1935 |
| Andropogon scoparius var. flexilis (Bosc ex Poir.) Hack., 1889 |
| Andropogon scoparius var. frequens F.T. Hubb., 1917 |
| Andropogon scoparius var. genuinus Fernald & Griscom, 1935 |
| Andropogon scoparius var. glaucescens House, 1924 |
| Andropogon scoparius var. littoralis (Nash) Hitchc., 1906 |
| Andropogon scoparius var. maritimus Hack. ex L.H. Dewey, 1894 |
| Andropogon scoparius var. multirameus Hack. ex Gatt., 1887 |