Curcuma Aeruginosa, Curcuma Inodora, those are two guesses, hard to tell; but definitely a Curcuma. If you wanted to cut one of the rhizomes in half, Aeruginosa has a blue center, the other does not.

Steve

Thanks Steve, from looking on the net for those two gingers I think it is the Inodora, Molly

Some of the elders call it Hidden Ginger!
Susan

Its called the curcuma aromatica.

Here is a link that might be useful: curcuma aromatica