Amaranthus is world widely occurred genus, it is cosmopolitan in nature and belongs to family Amaranthaceae. The selected species of Amarnthus from different states of India are viz; Amaranthus blitum, A. blitoides, A. deflexus, A. dubius, A. polygonoides, and A. retroflexus. An indented key is prepared on the basis of morphological characters which helps in the easy identification of the species. The present paper reveals that selected species of Amaranthus shows amazing morphological diversity.