A modern reference to temperate woody plants, including updated content from this site and much new material, can be found at Trees and Shrubs Online.




A genus of two or three species of shrubs, deciduous and more or less scandent. Leaves large, alternate; flowers small in terminal panicles; petals and stamens five; calyx five-lobed. The name refers to the three-winged fruit. Both species are easily cultivated in good loamy soil.

Species articles