Aruncus dioicus

Aruncus dioicus, known as goat's beard, buck's-beard or bride's feathers, is a flowering herbaceous perennial plant in the family Rosaceae, found in Europe, Asia, and eastern and western North America. It is the type species of the genus Aruncus. It has alternate, pinnately compound leaves, on thin, stiff stems, with plumes of feathery white or cream flowers borne in summer. The Latin specific epithet dioicus means "having the male reproductive organs on one plant, and the female on another"....read more on Wikipedia.