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CCDB → Angiosperms → Polygonaceae → Koenigia
| Taxon name | Status | Median (n) |
| Koenigia islandica L. | Accepted | 14 |
| Koenigia islandica None | Synonym of Koenigia islandica L. | 14 |
| Koenigia delicatula (Meisn.) H. Hara | Synonym of Polygonum delicatulum Meisn. | 14 |
| Koenigia forrestii (Diels) Mesicek & Soják | Synonym of Polygonum forrestii Diels | 7 |