Morning Glories: strange bloom on my Morning Glory., 1 by Riverland

Riverland wrote:
I am the first to admit I know nothing about MGs. I love to grow them. This particular one has me confused. I kept thinking I was missing the blooms. I finally realized the twisted bloom only unfurls slightly. It has no more petal area to allow full opening. I don't know whether I should keep seeds of it for next year or is it a mutation not worthy of propagation. I know environmental factors can also
cause strange changes.
Has any one ever seen this type bloom? `When the bloom is spent it turns into it self. Thanks for any input. Pictures are located here please click on the slideshow for best viewing.
http://picasaweb.google.com/riverland711/20070803081924