Nat. Ord. (Natural Order) ï¿½sculaceï¿½. Lin. Syst. (Linnean System) Heptandria, Monogynia. A large, showy, much admired, ornamental tree, bearing large leaves composed of seven leaflets, and, in the month of May, beautiful clusters of white flowers, delicately mottled with red and yellow. It is a native of Middle Asia, but flourishes well in the temperate climates of both hemispheres. It was introduced into England, probably from Turkey, about the year 1575: in that country the nuts are often ground into a coarse flour, which is mixed with other food and given to horses that are broken-winded; and from this use the English name of the tree was derived. A starch has been extracted in considerable quantity from the nuts. The wood is considered valueless in the United States.