Biosystematics and phylogeny of Tanacetum fisherae, a new record from Iran

The chromosome number (2n=5x=44+1B) of Tanacetum fisherae, as a new record from high mountains of southern Iran (Kerman province: Hazar mountain) is reported. A new ploidy level (pentaploidy) for the genus is presented for the first time. The studied population was aneuploid, having lost one chromosome out of the 45 expected in an x=9-based pentaploid. The distribution map, description and micromorphological characteristic of the achene are given. A taxonomic conclusion on the basis of molecular data and phylogenetic position of T. fisheraeis also discussed.