I located this variant of Sunday Silence amongst the thick growth on the trellis and isolated it from the other variant by looking for its interesting leaf and unwinding it from the growth of the other variant. The leaf shape is Maple leaf(Tatsuta-ba). Go to this website to learn more about leaf types in Japanese morning glory. You can learn much about Japanese morning glories and growing them.
http://protist.i.hosei.ac.jp/A...
