Pig Poop Bean, Chinese medicine name. It is the whole grass of the legume pig shit bean?Crotalaria pallida?Ait.

Alias: white pig shit bean, wild bitter bean, big eye orchid, wild soybean grass, pig shit green, wild peanut, big horse bells, water polygonum bamboo, ringing bell grass

Pig shit bean usually bloomed in the fall, born in the altitude of 100-1000 meters of the barren mountain grassland and sandy soil. China's Fujian, Taiwan, Guangdong, Guangxi, Sichuan, Yunnan, Shandong, Zhejiang, Hunan are cultivated.