There are plenty of internet nurseries that sell Curcumas. Stokes Tropicals and Aloha Tropicals are two. These plants ship very well and will take off once planted.

Steve

have you ever been to zilker garden? that is there in Austin They have a sale at the end of March ever year I bet you will find just what you are looking for there. The garden is 30 acres. We, here in Houston have Mercer Arboretum & Botanic Gardens that have their sale about the same time and I find lots of things you will not see at other places.
Good Luck

Here is a link that might be useful: http://www.zilkergarden.org/index.html

I have some, but it's still to young to divide. Funny mistake.