It seems to be Curcuma aromatica.Dr. M. Sabu
Professor
Department of Botany
University of Calicut
Kerala, 673 635, India
Phone: 91--4952431545
Mobile: 91- 09447636333
Website: www.gingersofindia.com
http://www.universityofcalicut.info/index.php?option=com_content&task=view&id=2175&Itemid=246