Agrimonia pilosa is also known as Delicao, Melon Vanilla, Old Beef Tendon and Wolf Bud Grass. The source is the aerial part of Agrimonia pilosa Ledeb. of Rosaceae. The whole grass is harvested in summer and autumn. Harvesting new plants before germination in winter and spring. Plant morphology perennial herbs, up to 1m high, with long white hair throughout the plant. The rhizome is short, and one or several root buds (overwintering buds) are often born. Stems erect, sparsely hairy and glandular hairy. Pinnate compound leaves alternate, with lobules of different sizes, arranged at intervals, oval to obovate, 2.5 ~ 7 cm long and 1.5 ~ 2.5～7cm wide, with serrated edges and pilose on both sides; Stipules nearly ovoid. Racemes are terminal; Calyx obconical, 5-lobed, with many hooked bristles at the base of lobes, persistent; Petals 5, yellow; Stamens 5 ~ 15; The ovary is semi-inferior and the style is prominent. The calyx tube thickens and droops when the fruit is ripe, with an upright hook at the top and a deep longitudinal groove outside. It is very similar to the head of a crane, so it is called Agrimony. The flowering and fruiting period is from May to December.