Family, Rose. Sepals and petals, 5, the latter small, white. Stamens and pistils in different flowers which are sessile, in open panicles on long, slender, spike-like branches.
Leaves, thrice-pinnate. Leaflets, thin, long, sharply toothed, 6 to 14 in number. June.
Tall plants, 3 to 7 feet. Perennial herbs. Rich soil, in moist woods.