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"Most morning glory flowers unravel into full bloom in the early morning. The flowers usually start to fade a couple of hours before the "petals" start showing visible curling. They prefer full solar exposure throughout the day and mesic soils. Some morning glories, such as Ipomoea muricata, are night blooming flowers." Wikipedia: http://en.wikipedia.org/wiki/Morning_glo...
This was just a neat shot I happened to capture. The sun was just peeking through the various plants growing here, and illuminated just the bottom part of this flower, giving it the look of having a "light" inside of it. I had to take the picture, although I forgot I was in aperture priority mode and ended up with a little too shallow depth of field. Lesson learned...