Astilbe chinensis (Maxim.) Franch& Sav.: The whole grass is wrinkled. The stem is cylindrical, with a diameter of 1-4 millimeters and a brownish yellow surface; The base has brown membranous scaly hairs or long soft hairs. The basal leaves have two to three lobes and three compound leaves, often fragmented. The intact leaflets are lanceolate, ovate, or broadly elliptical in shape, with a pointed tip and a wedge-shaped base. The edges have teeth, and both sides have sparse and stiff hairs along the veins; The stems and leaves are small and brownish red in color. The inflorescence is densely covered with brown curly long soft hairs, with dense flowers and few stems, and the sepals are deeply lobed; Petals 5, narrow strip-shaped. Sometimes withered yellow fruits can be seen.

Tiger ear grass belongs to the family of tiger ear grass and is a perennial herbaceous plant with long glandular hairs on its stem; The basal leaves have long petioles, and the leaves have heart-shaped, kidney shaped, and oblate shapes; The stem and leaves are lanceolate in shape, with cone-shaped inflorescence, and the flowering and fruiting period is from April to November. Named after its large leaves resembling tiger ears, it was first recorded in a local herbal book during the Southern Song Dynasty called "Lu Yan Ben Cao". Tiger ear grass is distributed in provinces such as Anhui, Fujian, Guangdong, Guangxi, Guizhou, and southeastern Gansu in China, as well as in North Korea and Japan; It mainly grows under forests, shrubs, meadows, and damp rock crevices at an altitude of 400-4500 meters.