Scientific name of fenugreek greens is Trigonella foenum-graecum. It belongs to the family Fabaceae. Fenugreek is considered to be a native of Eastern Europe and Ethiopia. It is widely cultivated in India and Mediterranean countries. Common name of fenugreek greens is Greek hay. Scientific name of mustard greens is Brassica juncea. It belongs to the family Brassicaceae. All members of Brassicaceae are believed to be originated in the region comprising of Western Europe, the Mediterranean region and the temperate regions of Asia.