Two years ago we thought we had bought a clematis 'Nelly Moser' - but when I look at the flower, it doesn't look at all how it should look. The petals are neither pink nor white but purple, and they're not dark in the centre and light at the edges but vice-versa. The flower's centre is yellow, while Nelly Moser has a purple centre, and the flower doesn't even have the same number of petals - ours has six, while Nelly Moser seems to have eight. Does anyone know which kind of clematis we might have instead?
Edited to add:
Wow, you guys are quick! I live in the Netherlands, which should be hardiness zone 10. The clematis started flowering in April, and is still flowering (I took the photo above this morning). I guess that would make it an early vine? And it flowers off new wood, not old wood. And I measured the diameter of the flower - it's about 6-7 cm (roughly 2,5-3 inches) which seems small to me, I think earlier flowers were larger. There are more flowers than this one, but they are too high up for me to reach! And I (very slightly) photoshopped the colour of the clematis to be a more accurate representation of it's real-life colours - and wouldn't be surprised though if you wouldn't really see a difference...
It might be useful to add that I suspect it might be pruning group 3, not 2. We hardly pruned it this spring, and during these past few months it really grew a lot! It's now about 2-2.5 m high, and looks as if it's dying/drying out at the bottom, while all flowers but one are high above my head - we'll definitely prune it back hard next year!