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Related to Cheiranthus: Cheiranthus cheiri, Erysimum cheiri
a genus of subshrubs and biennial or perennial herbs of the family Cruciferae. The plants are closely related to the genus Erysimum. There are about ten species, distributed on the Madeira and Canary islands, in the Mediterranean countries, northward as far as Central Europe, in China (Tibet, Kansu, Yunnan), and on the Pacific coast of North America. The wall flower (C. cheiri) has been used in floriculture since early antiquity.