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CCDB → Angiosperms → Rhamnaceae → Frangula
| Taxon name | Status | Median (n) |
| Frangula alnus Mill. | Accepted | 10 |
| Rhamnus frangula L. | Synonym of Frangula alnus Mill. | 10 |
| Rhamnus californica Eschsch. | Synonym of Frangula californica (Eschsch.) A. Gray | 12 |