Abstract
Chromosome numbers are reported for the 1st time for Hordeum bogdanii (2n=14), H. turke-stanicum var. turkestanicum and var. psilanthum (2n=28), H. roshevitzii (2n=14), H. brevisubulatum (2n-28), H. nevskianum (2n=14), and H. chilense (2n=14). Nomenclaturel proposals include Hordeum nevskianum and Hordeum roshevitzii.