Dear Friends, All members of the family Musaceae and the related Zingiberales have rhizomes. Although somewhat modified in bananas, it is very obvious in Cannas, Gingers, Heliconias and other relatives. Just the way it is. Best Jim W. -- Dr. James W. Waddick 8871 NW Brostrom Rd. Kansas City Missouri 64152-2711 USA Ph. 816-746-1949 Zone 5 Record low -23F Summer 100F +