Gymnocladus chinensis

Gymnocladus chinensis, the soap tree or Chinese coffeetree, is a tree in the subfamily Caesalpinioideae of the pea family Fabaceae, native to central China. It grows slowly and is apparently extremely rare. The leaves have huge bipinnate leaves starting purple then shading to green. http://www.pfaf.org/user/Plant.aspx?LatinName=Gymnocladus+chinensis