Iris ID please

This Iris is known as 'Japanese Iris' in Korea, though it seems that that name has been made up.

 

Believe it or not its Iris japonica.

Don't you know all names are made up by somebody?

 

Thanks so much Cereusly Steve.

Well, I couldn't believe that name since I had been fooled by all sorts of weird plant names made up by korean nursery owners, such as 'Valentine Jasmine' for Duranta erecta, 'Greenball Palm' for Castanospermum australe, or 'Firstlove Plant' for Lechenaultia formosa and Lechenaultia biloba.....