Madhuri Ji, To me, the first pic looks more like - Commelina benghalensis ( Ovate leaves ) and the second seems more near to- Commelina forsskalii ( lanceolate leaves).
But as Satish Ji said - " The key of differentiation is based on the cells of ovary which is difficult in the field. Many taxonomists objected about the guesses made from morphological characters "", May b I m completely wrong here.
