Chorispora is a genus of plant in the family Brassicaceae. It includes 13 species native to Eurasia, ranging from southeastern Europe to the Arabian Peninsula, China, and Siberia.

Chorispora tenella, known by several common names, including purple mustard, blue mustard, musk mustard, and crossflower is native to Eurasia but is well known in other parts of the world, particularly in temperate regions, as an introduced species and a noxious weed.

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