I need help with an I.D.
Can anyone help me id this EE? I traded for it at a plant swap about 3 years ago. The lady I got it from knew nothing about it and it was just labeled E.E. It was about 15 in. tall, had variegated petioles and very slight variegation on the extreme outer margins of the leaves. In the spring of 2012 I planted in the ground and this year it has really grown. It's now nearly 5 feet tall and has developed a lot more variegation on the leaves. I think it's a Xanthosoma, but not sure.
Any help you can give me would be greatly appreciated.