I purchase this plant 2 yrs ago and it said Sweet Autum Clematis...it blooms white...........What is it...name...Thanks....Diane
sweet autumn clematis
I agree--clematis terniflora. Sometimes my plant's leaves have the same white/gray striping on them as well and it goes away as the weather warms up. It seems to be tied to the coolness of the weather as the leaves develop or at least that is the way it seems to happen on mine.
If you check it out on COTW, there is a variety of terniflora called var. robusta and its description says that it can develop leaves with a silvery stripe.
Here is a link that might be useful: clematis terniflora var. robusta
Thanks for the information..