CCDB → Gymnosperms → Zamiaceae → Dioon
| Taxon name | Status | Median (n) |
| Dioon edule Lindl. | Accepted | 9 |
| Dioon purpusii Rose | Accepted | 9 |
| Dioon spinulosum Dyer ex Eichl. | Accepted | 9 |
| Dioon edule var. latipinnium Dyer | Synonym of Dioon mejiae Standl. & L. O. Williams | 9 |