| Dichanthelium oligosanthes subsp. scribnerianum (Nash) Freckmann & Lelong, 2002 |
| Dichanthelium oligosanthes var. helleri (Nash) Mohlenbr., 1985 |
| Dichanthelium oligosanthes var. scribnerianum (Nash) Gould, 1974 |
| Dichanthelium ovale (Elliott) Gould & C.A. Clark, 1978 |
| Dichanthelium ovale subsp. praecocius (Hitchc. & Chase) Freckmann & Lelong, 2002 |
| Dichanthelium ovale subsp. villosissimum (Nash) Freckmann & Lelong, 2002 |
| Dichanthelium ovale var. addisonii (Nash) Gould & C.A. Clark, 1979 |
| Dichanthelium pedicellatum (Vasey) Gould, 1974 |
| Dichanthelium portoricense (Desv. ex Ham.) B.F. Hansen & Wunderlin, 1989 |
| Dichanthelium portoricense subsp. patulum (Scribn. & Merr.) Freckmann & Lelong, 2002 |
| Dichanthelium portoricense subsp. portoricense (Desv. ex Ham.) B.F. Hansen & Wunderlin, 1989 |
| Dichanthelium sabulorum (Lam.) Gould & C.A. Clark, 1979 |
| Dichanthelium sabulorum var. patulum (Scribn. & Merr.) Gould & C.A. Clark, 1979 |
| Dichanthelium sabulorum var. thinium (Hitchc. & Chase) Gould & C.A. Clark, 1979 |
| Dichanthelium scoparioides (Ashe) Mohlenbr., 1985 |
| Dichanthelium scribnerianum (Nash) Gould, 1974 |
| Dichanthelium sphaerocarpon (Elliott) Gould, 1974 |
| Dichanthelium sphaerocarpon var. sphaerocarpon (Elliott) Gould, 1974 |
| Dichanthelium strigosum (Muhl. ex Elliot) Freckmann, 1981 |
| Dichanthelium strigosum var. glabrescens (Griseb.) Freckmann, 1981 |