| Dichanthelium aciculare subsp. angustifolium (Elliott) Freckmann & Lelong, 2002 |
| Dichanthelium aciculare subsp. fusiforme (Hitchc.) Freckmann & Lelong, 2002 |
| Dichanthelium aciculare subsp. neuranthum (Griseb.) Freckmann & Lelong, 2002 |
| Dichanthelium aciculare var. aciculare (Desv. ex Poir.) Gould & C.A. Clark, 1979 |
| Dichanthelium aciculare var. ramosum (Griseb.) Davidse, 1992 |
| Dichanthelium acuminatum (Sw.) Gould & C.A. Clark, 1979 |
| Dichanthelium acuminatum subsp. columbianum (Scribn.) Freckmann & Lelong, 2002 |
| Dichanthelium acuminatum subsp. implicatum (Scribn.) Freckmann & Lelong, 2002 |
| Dichanthelium acuminatum subsp. leucothrix (Nash) Freckmann & Lelong, 2002 |
| Dichanthelium acuminatum subsp. lindheimeri (Nash) Freckmann & Lelong, 2002 |
| Dichanthelium acuminatum subsp. longiligulatum (Nash) Freckmann & Lelong, 2002 |
| Dichanthelium acuminatum subsp. sericeum (Schmoll) Freckmann & Lelong, 2002 |
| Dichanthelium acuminatum subsp. thermale (Bol.) Freckmann & Lelong, 2002 |
| Dichanthelium acuminatum var. acuminatum (Sw.) Gould & C.A. Clark, 1979 |
| Dichanthelium acuminatum var. implicatum (Scribn.) Gould & C.A. Clark, 1979 |
| Dichanthelium acuminatum var. lindheimeri (Nash) Gould & C.A. Clark, 1979 |
| Dichanthelium acuminatum var. longiligulatum (Nash) Gould & C.A. Clark, 1979 |
| Dichanthelium acuminatum var. sericeum (Schmoll) Freckmann, 1981 |
| Dichanthelium acuminatum var. thermale (Bol.) Freckmann, 1981 |
| Dichanthelium acuminatum var. thurowii (Scribn. & J.G. Sm.) Gould & C.A. Clark, 1979 |