Stems stout, smooth or pubescent but not glandular or waxy, 3 to 10 feet high, branching. Leaves three to four-ternate; leaflets thickish, light green above and pale beneath, oblong or orbicular with three main apical pointed or blunt lobes; panicle compound, leafy, a foot long or more. Flowers polygamous, white or purplish, usually the pistillate flowers purplish and the staminate flowers white; filaments broad, narrowly clavate; anthers oblong, short. Fruiting achenes ovoid, sessile or short-stipulate, six to eight-winged, glabrous or pubescent.
Memoir 15 N. Y. State Museum
Fall Meadow Rue - Thalictrum polygonum