Mustard is the name of several annual plants of the Cruciferae family, including white mustard (Sinapis alba), black mustard (Brassica nigra), wild mustard or charlock (Sinapis arvensis) and brown mustard (Brassica juncea). The mustards are bristly branching plants ranging from 30 cm to one meter in height, with variously lobed leaves, yellow flowers and long rounded seed pods. In the black mustard the seed pods stand erect and close to the stem. In the other species the pods stand out from the stem, and the seeds which in charlock are brown are yellow in white mustard. The seeds of the black mustard and white mustard are ground and mixed and used commercially as a flavouring. Research Mustard