Are Zaluzianskya and Carthamus native to the same parts of the world ?
Zaluzianskya Zaluzianskya is a genus of flowering plants now regarded as being a member of the Scrophulariaceae, the figwort family. The genus is endemic to Southern Africa and includes some described sixty species.
Rhamnus cathartica Rhamnus cathartica, the buckthorn, common buckthorn or purging buckthorn, is a species of small tree in the flowering plant family Rhamnaceae. It is native to Europe, northwest Africa and western Asia, from the central British Isles south to Morocco, and east to Kyrgyzstan. It was introduced to North America as an ornamental shrub in the early 19th century or perhaps before, and is now naturalized in the northern half of the continent, and is classified as an invasive plant in several US states and in Ontario, Canada.