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CCDB → Angiosperms → Poaceae → Chasmanthium
| Taxon name | Status | Median (n) |
| Chasmanthium latifolium (Michx.) H. O. Yates | Accepted | 24 |
| Gouldochloa curvifolia J. Valdés & Morden & S. L. Hatch | Synonym of Chasmanthium curvifolium (Valdés-Reyna & Morden & S. L. Hatch) Wipff & S. D. Jones | 12 |
| Uniola latifolia Michx. | Synonym of Chasmanthium latifolium (Michx.) H. O. Yates | 24 |
| Chasmanthium sessiliflorum (Poir.) Yates | Synonym of Chasmanthium laxum (L.) H. O. Yates | 12 |
| Uniola laxa (L.) Britton & Stern & Poggenb. | Synonym of Chasmanthium laxum (L.) H. O. Yates | 12 |
| Uniola sessiliflora Poir. | Synonym of Chasmanthium laxum (L.) H. O. Yates | 12 |
| Uniola nitida Baldwin ex Elliott | Synonym of Chasmanthium nitidum (Baldwin) H. O. Yates | 12 |
| Uniola ornithorhyncha (Nees) Steud. | Synonym of Chasmanthium ornithorhynchum Nees | 12 |