Dragon’s Tooth Grass

Dragon’s Tooth Grassoriginal: "Longyacao" (龍牙草). This plant is known scientifically as Agrimonia pilosa original: "Agrimonia pilosa". The name "Dragon's Tooth" refers to the sharply serrated, tooth-like edges of its leaves. It is a staple of the Materia Medica—the traditional body of knowledge regarding medicinal substances.

Botanical Illustration: A woodcut drawing of the Dragon’s Tooth Grass plant. The image depicts a central vertical stalk with several alternating branches bearing compound leaves. The leaves show clear serrated margins, and at the base, a thick, fibrous root system emerges from a sloping ground line. This style of woodcut is characteristic of 16th-18th century pharmacological texts, designed to help practitioners identify wild herbs in the field.