Clematis: Help ID, but no prize Niobe vs Warsaw Nike, 1 by onegoodman1955

onegoodman1955 wrote:
I guess I'm really looking forward to spring. This is a June 1, 2006 pic. I'm leaning towards this Clematis being Niobe. Are there any distinguishing features between Niobe and Warsaw Nike. I am in zone 5. The plant has reached 5-6' and I get one full bloom in June and at best a much smaller volume of blooms towards fall. The clematis is planted on the west side and receives full sun. Thank you very much.