Genus of flowering plants in the cabbage family Brassicaceae
Coincya is a genus of flowering plant that belongs to the family Brassicaceae. Three species of the plant are endemic to the British Isles, these being "Coincya wrightii" (Lundy cabbage), "Coincya cheiranthos" (nokkasinapit) and "Coincya monensis", which has two subspecies, "C. monensis" subsp. "monensis" (Isle of Man cabbage) and "C. monensis" subsp. "recurvata" (star mustard). Another four species are endangered and endemic to the south-central Iberian peninsula.
The name derives from the French botanist Auguste-Henri de Coincy.
The star mustard, a plant introduced to eight U.S. states is the same species as the Isle of Man cabbage but a different subspecies. It may have been introduced to the U.S. as the Isle of Man cabbage and subsequently evolved through the founder effect and geographic isolation into a new subspecies.
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