Chromosome counts report of some species from Iran

The chromosome number of Ferula stenocarpa (2n=22) and Ducrosia flabellifolia (2n=22) belonging to Apiaceae, Rindera lanata (2n=48) from Boraginaceae, and Ziziphus spina-christi (2n=24), Z. nummularia (2n=24) of Rhamnaceae and also a hybrid between them (Z. nummularia × Z. spina-christi 2n=24) from the Sahara Sindian Region (southern Iran) are reported. The chromosome numbers of Ferula stenocarpa and Rindera lanata are reported here for the first time and Ducrosia flabellifolia, Z. nummularia, Z. spina-christi, and Z. nummularia × Z. spina-christi are reported for the first time from the Iranian population.