Chromosome numbers in Hieracium (Asteraceae) from Central and Southeastern Europe V

Chromosome numbers for 15 taxa of Hieracium s.lat. (including two taxa of Pilosella Vaill.) from Bosnia and Herzegovina, Bulgaria, Greece, North Macedonia, Poland, Romania and Slovakia are given and their metaphase plates are illustrated. Chromosome numbers are published for the first time for H. pannosum subsp. parnassi Nägeli & Peter from Greece (3x and 4x), and for an undescribed species of H. sect. cernua from North Macedonia (4x). a new, diploid chromosome number was found in H. bracteolatum s.lat. from Greece.