Thalictrum pubescensThalictrum pubescens, the king of the meadow or tall meadow-rue, is a plant in the buttercup family, Ranunculaceae.DescriptionThalictrum pubescens is a herbaceous plant with alternate, pinnately compound leaves, on hollow, green stems. The flowers are white, borne in spring and summer.DistributionThe range of this plant includes most of eastern Canada and United States excluding Florida.