Name of the beautiful purple flower

This, just in from my blog friend, Joanne. "The flower's name is Osteospermum.   A Proven Winner annual." Joanne works at a nursery, so I knew she'd know. Thanks!

They are, apparently, a native of Africa and come in a vast number of colors. Mine looks a little beaten down by the rain today. I hope it perks up. The picture was taken last week when it was looking a little livelier.