Look at the pictures on Baidu of Wolfsbane Flower.

Botanically speaking, wolfsbane flower is also called match flower, including wolfsbane of the Thymeaceae family and wolfsbane of the Euphorbiaceae family. Most of the things I saw on the plateau were Styrophylla of the Thymeaceae family. When the buds are in buds, they are red, but when they bloom, they are snow-white. One plant can bloom 10 to 20 flowers with 5 petals, and the diameter of the flowers is less than 0.5 cm, small and delicate. On the plateau, herders gave it this name because of its poisonous sap. Wolfsbane flower has a large root system and strong water absorption capacity. It can adapt to dry and cold climates and has strong vitality. It is difficult for surrounding herbaceous plants to compete with it. In some places, it has been regarded as a "warning light" of grassland desertification. The most important reason for the proliferation of wolfsbane on the plateau is that people have overgrazed, and there are fewer other species, so wolfsbane takes advantage of the situation.

Synonyms are Xuedu ("Ben Jing") and Sichuan wolfsbane ("Jixiao Prescription").

The source is the roots of the Thymeaceae plant Wolfsbane or the Euphorbiaceae plants Wolfsbane Euphorbia and Euphorbia lunata.