'Chocolate Rose Silk' Japanese Morning Glory

My ‘Chocolate Rose Silk’ Japanese morning glory came from a seed trade years ago. This spring I finally got around to sowing the morning glory seeds and growing out a couple of plants. My morning glory’s blooms most closely resemble the Ipomoea nil ‘Chocolate Rose Silk’ available for sale at a couple of different seed websites and that’s what I’ve chosen to identify my plant as.