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The cosmopolitan genus salvia L. (Lamiaceae) consists of nearly 1000 species distributed throughout the Old and New Worlds. America and South- West of Asia are the two most important distribution centers. Of the 70 species reported in the flora Iranica area nearly 56 species belong to Iran. This investigation deals with the morphology of Salvia. The morphological studies were performed on 36 populations of 11 species which grow in Central Alborz Mo-untains. In this analysis 42 quality and quantity characters were used. The results of this analysis have been used for the preparation of the identification key. Clustering, cladistics and PCA ordination reveals the relationships of the species in this genus.