Resumen de Chromosome numbers and DNA ploidy levels of selected species ofHieracium s.str. (Asteraceae)
Jindrich Chrtek, Partrik Mráz, Jaroslav Zahradnicek, Gonzalo Mateo, Zbigniew Szelag
Chromosome numbers and/or ploidy levels are reported for 44 species and subspecies of Hieracium s.str, from the following European countries: Andorra, Austria, Bulgaria, Czech Republic, France, Italy, Montenegro, Serbia, Slovakia, Slovenia, Spain, Sweden, Switzerland and Ukraine. The chromosome numbers/DNA ploidy levels ofH. bocconei (2n - 4x), H. bupleuroides subsp, leviceps (2n = 27), H. caesioides subsp, caesioides (2n = 27), H. basifolium (H. caesium agg., 2n = 36), H. plumbeum (H. caesium agg., 2n = 36), 1-1. glaucum subsp, nipholepium (2n = 27), H. gouanii (2n = 18), H. gymnocerinthe (2n = 27), H. ramondii (2n = 27), H. recoderi (2n = 18), H. stelligerum (2n = 18), and H. tomentosum (2n = 18, 2n - 2x, 2n - 3x) were determined for the first time. New ploidy levels are reported for/-/, cerinthoides s.str. (2n = 27), H. humile (2n = 36), and H. tommasinianum (2n = 27).
