The lotus position (padmasana ) is a cross-legged sitting posture, most prominently used during meditation (dhyana). in which the feet are placed on the opposing thighs. According to B.K.S. Iyengar, "meditation does not make the mid dull. Rather, in meditation the mind is still but razor sharp, silent but vibrant with energy. But this state cannot be achieved without a firm, stable sitting posture, where the spine ascends and the mind descends and dissolves in the consciousness of the heart, where the true Self reveals itself". Lotus position keeps the body stable when sitting for a long period of time as in meditation. The stability of the body releases the mind to concentrate on breathing and brings about calmness of mind.
The art above shows Lochanadevi in lotus position. More of my yoga art can be found in my Etsy and Artfire shops.