Red-Speckled Yellow Flower

Four O'Clock Flower (Mirabilis jalapa)

I was fascinated by this yellow flower. Another variety of one I posted in my Flower Power Collection. At far, you can only see this as plain yellow but with a closer look, you can see the petals with red dots.

This is named as Four O'Clock or Marvel of Peru. Perhaps this is called as Four O'Clock Flower because the flower starts to close at 4 PM.