Clematis 'Jackmanii'
Today I noticed the clematis is looking lovely. It started blooming before I even thought about pruning, which is supposed to be done in late winter. Maybe it too late now to try to prune it? I do not know if it is advisable at this point.
pbmGarden 
I love your last photo. It shows the richness of the flower colour.
Thank you.I love flowers in that blue to purple range.
Your photos really show off this pretty flower! Beautiful colour with the violet streaks and centre.
Thank very much. It is an amazing flower.