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Vascular plant endemism in the phytogeographical regions of Iran.
| Phytogeographical region | Region size (km2) | Iranian endemic species | Range-restricted endemic species | Iranian endemic genera |
|---|---|---|---|---|
| Irano-Turanian | 1,769,457 | 2289(88%) | 1239(89%) | 21 |
| Saharo-Sindian | 451,052 | 133(5%) | 88(6%) | 4 |
| Euro-Siberian | 80,317 | 101(4%) | 56(4%) | 1 |
| Shared | — | 73(3%) | — | — |
