Lavignon

lavignon or lavagnon the French name for an edible bivalve, Scrobicularia plana, which is a local speciality of the Charente-Maritime. The species has a distribution extending from Norway to the Mediterranean and beyond, and is abundant in British waters, but seems not to be generally eaten. An English name, mud-hen, used to be current, suggesting some consumption in the past in England. Now it is sometimes named ‘furrow shell’ in technical works.