This paper endeavors to investigate in detail the different types of plant species compatible with the moderate Hircanian climate (the southern margin of the Caspian Sea) and then classifying them in an applicable way to be used in designing urban landscapes. Each species was carefully studied from reliable sources and then analyzed. The endemic and nonendemic species studied have been categorized into specific groups according to their applicable characteristics such as resistance to different urban conditions, pollutions and aesthetic criteria. These categories are free of the botanical classification, being organized merely according to their application and features in designing urban landscapes.
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