Climbing The Walls

A couple of weeks ago I visited Pembroke Castle. There are high walls, narrow passages, a huge circular keep and a wogan (more of that later in the week)

Although I have some pretty decent shots of the castle itself I wanted to share these pictures of flowers that were growing in the cracks in the mortar of the walls. 

I have tried to identify the two types of flower but I haven't been able to so if anybody can help me out I will be very grateful, I have included a crop of the tiny purple ones to make it easier...

Wall Flower

No these are not wallflowers but they are flowers which grow on a wall. 

I am amazed at the variety of flora, the shapes, sizes and colours and also at how some can survive in the harshest environment.  Like these wonderful flowers which grew out of nothing, squeezing their roots into the cracks in the wall.