Valerianella locusta (*)
Valerianella locusta (L.) Lat.
* Valerianella olitoria (L.) Pollich
* Valerianella locusta (L.) Lat. Report on ITIS
Corn salad (Valerianella locusta) is a small dicot annual plant of the family Valerianaceae. It is also called Lewiston cornsalad, lamb's lettuce, field salad, mâche, and rapunzel.
Corn salad grows wild in parts of Europe, northern Africa and western Asia. In Europe and Asia it is a common weed in cultivated land and waste spaces. In North America it has escaped cultivation and become naturalized on both the eastern and western seaboards.
Corn salad was originally foraged by European peasants until the royal gardener of King Louis XIV, de la Quintinie, introduced it to the world. 
Like other formerly foraged greens, corn salad has many nutrients, including three times as much Vitamin C as lettuce, beta-carotene, B6, B9, Vitamin E, and omega-3 fatty acids. It is best if gathered before flowers appear.
1. ^ Floridata: Valerianella locusta
This article incorporates text from the public domain 1911 edition of The Grocer's Encyclopedia.
Source: Wikispecies, Wikipedia: All text is available under the terms of the GNU Free Documentation License