狼毒为毛茛科多年生草本植物;高一尺许叶互生,长圆形,在四月中开白花。根皮棕色肉白色。多生在山坡土嶺上,不喜水,耐干,挖出土后放置五天再栽还能生长。产地产季陕西、内蒙古、山东、河北、山西、青海、甘肃等地均产。在春秋两季挖其根。加工采集以后,去净苗槎及泥土,用刀去掉细根,大者切为咀塊约长寸许。晒干,用硫黄薰(每拾斤用硫黄一两),薰过不但美观而不生虫。多用蓆子包装放干燥处以防发霉变色。规格、销路一般不分等级,以身大、肉白、棉性大为佳。炮炙方法河北省一般是将狼毒切为厚片晒干, Stellera chamaejasme is a perennial herb of the Ranunculaceae family; the tall leaves are alternate and oval, and white flowers bloom in mid-April. Root bark brown meat white. Many were born on the slopes of the mountains and did not like water. They were resistant to drought and were able to grow after five days of excavation. Property production season Shaanxi, Inner Mongolia, Shandong, Hebei, Shanxi, Qinghai, Gansu and other places are produced. Digging its roots in the spring and autumn. After the processing and collection, the seedlings and soil are cleaned and the fine roots are removed with a knife. Dried with sulfur sulfur (one or two sulfur per pick), not only beautiful but not insects. Multi-purpose mats are placed in a dry place to prevent moldy discoloration. Specifications, sales generally do not grade, with large body, white meat, cotton is better. Artillery methods Hebei Province generally cut the wolf poison into thick slices and dried.