Is this a Japanese Wisteria or a Chinese Wisteria?

[Aparecium]

It does not bloom on bare branches, but at about the same time as the leaves come through. Most of the leaf growth is after it has bloomed.

Looks Chinese to me.

They spiral in different directions. One grows clockwise and the other grows anticlockwise. Not sure which way round but you can Google it.

Which way does this one twine? It changes direction!

The bit we can see goes clockwise = floribunda or any of the other species. Anticlockwise = sinensis (chinese). You look down from the top.