“…Onosma L. (Boraginaceae-Lithospermeae), one of the largest genera in Boraginaceae, is primarily distributed in the temperate zones of the Old-World, with the main center of diversity in the Irano-Turanian region (Weigend et al 2016). In recent years, several new species of Onosma have been described (Riedl et al 2004, Binzet and Orcan 2007, Kandemir and Turkmen 2010, Aytac and Turkmen 2011, Almasi and Ranjbar 2015, Tarimcilar et al 2015, Binzet 2016a, Binzet 2016b, Cecchi et al 2016, Binzet and Eren 2018, Dehshiri 2018, He et al 2018, Mehrabian and Mozaffarian 2018, Mehrabian and Rad 2018, which increases the total number of Onosma species to nearly 240. The northeastern region of the geographic distribution of the genus ranges from Turkestan to Altai (Johnston 1951), with the Altai Mountains running through Russia, China, Mongolia and Kazakhstan.…”