WordNet (r) 3.0 (2006):

Indian rhubarb
    n 1: rhizomatous perennial herb with large dramatic peltate
         leaves and white to bright pink flowers in round heads on
         leafless stems; colonizes stream banks in the Sierra Nevada
         in California [syn: umbrella plant, Indian rhubarb,
         Darmera peltata, Peltiphyllum peltatum]
    2: Asian herb (Himalayas) [syn: Himalayan rhubarb, Indian
       rhubarb, red-veined pie plant, Rheum australe, Rheum
       emodi]