Dried tops of Cytisus scoparius (L.) Link, Leguminosae. The seeds and flowers are also used, though not officially. Habit. Western Asia, Southern and Western Europe; cultivated in U.S.A., particularly in Oklahoma. Constit. Sparteine, scoparin, genisteine, sarothamnine, volatile oil, tannin, fat, wax, sugar.
Diuretic, cathartic.