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In this study the morphological and micromorphologcal characters of Ranunculus Sect. Batrachium species in Iran have been investigated. The characters describe leaf, petal and fruit, in addition to pollen grains in four species of the genus including, R. sphaerospermus Boiss. & Blanche, R. trichophyllum Chaix ex. Vill., R. rionii Lagger and R. peltatus Schrank. Pollen grains were tricolpate and had species-specific shapes. The sculpture of the exine was echinnate in all of the species studied. Seven morphological characters have been studied using statistical methods and SPSS software has been used in order to group the species. These analyses indicated that R. sphaerospermus was a valid species and very similar to R. peltatus. Also, intraspecific diversity in R. trichophyllum was confirmed by statistical methods

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The present study was aimed to investigate foliar anatomy and flower, fruit and seed morphology of three subspecies of Agrimonia eupatoria (i.e. A. eupatoria subsp. eupatoria, A. eupatoria subsp. grandis and A. eupatoria subsp. asiatica) and the species of Aremonia agrimonioides, belonging to the subtribe Agrimoniiae (Rosaceae) in Iran. Firstly, plant specimens were collected and then identified on the basis of relevant references. For anatomical analysis, the cross sections of basal leaves of each taxon were prepared, studied by light microscopy and then photographed by means of a digital camera. For morphological analysis, the flower, achene and seed characters were carefully examined using digital microscopy. To determine the relationships among the taxa, 57 characters were included in the Principal Component Analysis (PCA). The results supported the classification proposed by Flora Iranica and showed the importance of leaf anatomical, flower, achene and seed morphological characters in separating inter-generic, intraspecific and interspecific relationships among the representatives of subtribe Agrimoniinea in Iran.