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CCDB → Angiosperms → Penthoraceae → Penthorum
| Taxon name | Status | Median (n) |
| Penthorum chinense Pursh | Accepted | 8 |
| Penthorum sedoides L. | Accepted | 8 |
| Penthorum humile Regel & Maack | Synonym of Penthorum chinense Pursh | 8 |