Valerianella locusta. Mâche is a very popular salad green in France, which is the world’s top producer (notably in the départment of Loire-Atlantique) . It is almost always sold in plastic bags in the refrigerated section of the supermarket, sometimes mixed together with roquette.
Also known as blanchette, boursette, clairette, doulcéta, doucette, gallinette, herbe des chanoines, raiponce, oreillette, oreille-de-lièvre, poule grasse, romande, rampon, ramponnet, salade de blé, valérianelle, or valérianelle cultivée.
Image by Rhian