Global distribution includes the middle east and for Iran it is observed mainly in central and western parts.
The middle east is the main growth region (Syria, Iraq, Iran and Anatoli area).
Geographical distribution of astragal in Iran
Central and western regions especially Eastern and Western Azarbaijan, mountains of Khorasan, Alborz and Zagros
Nearly 800 species are present in Iran, of which some are thorny and others grow herbaceous. Approximately 400 species of astragal are endemic to Iran. Among thorny species of astragal, gum producing species persist which are commonly known as white and yellow Katira for consumers.