Karyotype analysis of three species from the western regions of Iran

Three plant species belonging to three genera of Apiaceae, Boraginaceae & Poaceae were collected from wetlands in western regions of Iran. The chromosomal count of Leiotulus porphyrodiscus (Stapf & Wettst.) Pimenov & Ostr. (2n = 22) is reported for the first time, and the chromosome count of Arrhenatherum elatius (L.) P. Beauv. ex J. Presl & C. Presl (2n = 28) is reported for the first time for the flora of Iran. The number of chromosomes in Echium italicum L. (2n = 16) is reported from Kermanshah Province. Karyomorphological parameters such as karyotypic formula, Romero-Zarco indices, Stebbins class, and other karyotypic symmetry indices were determined for all species.