Macleaya, or plume poppy, is a genus of two or three species of flowering plants in the poppy family Papaveraceae, native to Japan (Macleaya cordata) and China (Macleaya microcarpa).
The Macleaya genus comprises two or three species of flowering plants belonging to the poppy family, Papaveraceae. These plants are native to Japan and China.  (Macleaya cordata is found in Japan, while Macleaya microcarpa is found in China.)