- Rheum, genus Rheum - rhubarb
--1 is a kind of dicot genus, magnoliopsid genus
--1 is a member of Polygonaceae, family Polygonaceae, buckwheat family
--1 has members:rhubarb, rhubarb plant; Himalayan rhubarb, Indian rhubarb, red-veined pie plant, Rheum australe, Rheum emodi