Neglected and underutilized crop
Neglected and underused crops are domesticated plant species that have been used for centuries for their food, fibre, fodder, oil or medicinal properties, but have become less important over time. There are many other terms to describe these crops. Usually, these crops are underused, because there are other, similar crops that have better properties, such as a longer shelf life.  Their nutritional value may be unrecognized. Sometimes, they may also have an image problem: They may be seen as famine food, or "poor people's food". Sometimes, they have become neglected, because the way agriculture is done has changed. Some crops have been neglected so much that genetic erosion  of their gene pool has become so severe that they are often seen as lost crops.