I am trying to identify a clematis growing wild in my backyard and all over the county. Googling I have narrowed it down to two species.
Clematis ternifolia a native of Japan which has escaped cultivation and now grows wild is several states. And
Clematis ligusticifolia a native of western US. Three cultivars are available.
Both have the common name Virgin's Bower Clematis.
I have found several sites that describe each species. But can not find a site that discusses both species.
Can anyone give advice as how to determine which I have?