The Crape-myrtle is sometimes referred to as the tree with 100 days of color. They start blooming in late June and can bloom through the month of September. I had never closely examined the blooms until recently. This bloom comes from a tree that was an Arbor Day sprig I planted in my yard many years ago. The macro photo shows the bloom is a ring of independent petals. Because the blooms are massed so close together we rarely notice nature's grand design for this ever popular tree. Canon 40D, 1/250 sec @ f/18, ISO 400, 70mm macro with off-camera flash.