The taxonomy and morphology of 24 Salvia atropatana Bunge (Lamiaceae) accessions were studied in Iran. The morphological variations are mostly related to the indumentum and trichome frequency in surface and base of stem, leaf length, form of leaf margin, indumentum of leaf surface, form of bract margin, indumentum of bracteole surface, indumentum of calyx surface, corolla length, indumentum of corolla surface and style length. The cluster analysis based on Euclidian Distance Coefficient and SPSS V.11.5 software was used to determine the infra-specific relationships. The results of cluster analysis show diversity among the accessions of this species. Based on the findings, it can be concluded that the morphological variability of S. atropatana accessions is due to the polymorphism, and infra-specific hybridization. 

Keywords: Variability, Polymorphism, Salvia L, Lamiaceae

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