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CCDB → Angiosperms → Poaceae → Holcus
| Taxon name | Status | Median (n) |
| Holcus annuus Salzm. ex C. A. Mey. | Accepted | 7 |
| Holcus gayanus Boiss. | Accepted | 4 |
| Holcus grandiflorus Boiss. & Reut. | Accepted | 7 |
| Holcus lanatus L. | Accepted | 7 |
| Holcus mollis L. | Accepted | 14 |
| Holcus caespitosus Boiss. | Synonym of Deschampsia minor Clayton | 7 |
| Holcus setiglumis Boiss. & Reut. | Synonym of Holcus annuus Salzm. ex C. A. Mey. | 7 |
| Holcus lanatus var. vaginatus Willk. ex P. Lara | Synonym of Holcus lanatus L. | 7 |
| Holcus mollis | Synonym of Holcus mollis L. | 14 |