TY - JOUR N2 - Chromosome numbers for 23 taxa of Hieracium L. from Bulgaria, Greece, Poland and Slovakia are given and their metaphase plates are illustrated. The ploidy level of 8 taxa was also confirmed by flow cytometry. Chromosome numbers are published for the first time for Hieracium bracteolatum subsp. koracis (Boiss.) Zahn (4x), H. marmoreum Pančić & Vis. (3x), H. ossaeum Zahn (3x), H. sartorianum Boiss. & Heldr. (3x), H. sericophyllum Nejčeff & Zahn (3x) as well as for five other undescribed species. L1 - http://journals.pan.pl/Content/115007/PDF/2020-02-ABC-04-Musial.pdf L2 - http://journals.pan.pl/Content/115007 PY - 2020 IS - No 2 EP - 50 DO - 10.24425/abcsb.2020.131672 KW - Asteraceae KW - chromosome number KW - Europe KW - Hieracium KW - karyotype KW - ploidy level A1 - Musiał, Krystyna A1 - Vladmirov, Vladimir A1 - Szeląg, Zbigniew PB - Biological Commission of the Polish Academy of Sciences – Cracow Branch VL - vol. 62 DA - 2020.12.21 T1 - Chromosome numbers in Hieracium (Asteraceae) from Central and Southeastern Europe VI SP - 43 UR - http://journals.pan.pl/dlibra/publication/edition/115007 T2 - Acta Biologica Cracoviensia s. Botanica ER -