This remarkably patterned plant is a Ginger in the genus Costus.  It is native to Macas, in Southern Ecuador.  For a Ginger, it is on the slow side, and a little bit temperamental in my growing conditions.  Given more room to grow, I suspect it would get a bit larger. Each leaf comes out a little different, with new growth being more purple, and developing more green mottling as the leaf matures.

Available plants are rooted in 2″ pots and have at least two leaves.