WordNet (r) 3.0 (2006):

shell ginger
    n 1: cultivated for its shining oblong leaves and arching
         clusters of white flowers with pink shading and crinkled
         yellow lips with variegated magenta stripes [syn:
         shellflower, shall-flower, shell ginger, Alpinia
         Zerumbet, Alpinia speciosa, Languas speciosa]