Nature's Calendar - Flowers on the tree

There is the most amazing tree in the centre of town. I don't know what it is called but it's seed pods look like runner beans. I have photographed this tree many times but never have I seen the blossom before.
Here it is again in situ with seats around it and, although they can't be seen it is probably full of birds.

the photo makes the tree look sparse in leaves but it isn't in reality, it must be the sunlight streaming through blanking out some of the foliage