Do you know this Purple Zennia?

Image by blipars via Flickr This is one flower that is truly missing from my neighbour's garden. I was approached to look out for more information on Purple Zennia by my neighbour.

I have been trying to some data on it for the past 20 minutes but nothing concrete so far has been dug.

I searched the search engines and a fe flower related forums, It seems everyone is trying to know mote this gorgeous looking flower.

Any help please?