The scientific name of field mustard is Brassica rapa subsp oleifera. The scientific name of black mustard is Brassica nigra. The scientific name of brown mustard is Brassica juncea.
Alternative greens to use for recipes would be escarole, gai choy, kale, radish greens, spinach, or Swiss chard. Mustard greens are also known as curly or curled mustard, mustard spinach, and Indian mustard, or leaf mustard.
Mustard seeds are produced by a family of plants in the Brassicaceae family. Seeds come from plants in both genera of Brassica and Sinapis. Typically, mustard seeds are categorized according to their color which is either yellow, brown, or black.