1. The basal leaves of Sanguisorba officinalis are pinnate compound leaves, with 4-6 pairs of leaflets, oval or oblong, obtuse at the top, heart-shaped at the base, shallow heart-shaped, serrated at the edges and green on both sides. Stipules membranous and brown. Cauline leaves are few, oblong to oblong-lanceolate, and the base is slightly heart-shaped to round. Stipules are herbaceous, semi-elliptic.

Second, the flowers of Sanguisorba officinalis are spike-shaped, oval, oval or cylindrical, and erect. Bracts are membranous, lanceolate, tapering from top to tail tip, with 4 sepals, purple in color, oval to wide oval, and pilose on the back. The flowering and fruiting period is July -65438+ 10.