Irano-Turanian Region

The Irano-Turanian Region is a located within the Tethyan Subkingdom of the Holarctic Kingdom. It is divided into 12 according to the work of Armen Takhtajan, a Soviet-Armenian botanist who created a classification system for flowering plants. One of the main characteristics of the region is a great diversity and abundance of species, especially in the Iranian Plateau. The region's climate is predominantly continental, with the rainy season either in winter or spring to early summer.

...
Wikipedia