Fang Feng, Siler (Saposhnikovia Divaricata) is a perennial hairless herb, 30-80 cm high. The root is stout. The stem is solitary, and usually with two branches. Basal leaves are triangular-ovate, 7-19 cm long, 2-3 pinnately divided, and ultimately with bar-like to lanceolate lobes and entire margin. The flowers are white or yellow in color. It blooms from August to September and fruits from September to October.