Corydalis is a plant of the genus Corydalis. The Chinese name for Corydalis yanhusuo is yan hu suo (Chinese: Yan Hu Suo; Pinyin: yán hú suǒ; Lit. "Extended wild rope"). The Japanese common name is engosaku (エングサク), and the Korean common name is hyeonhosaek (현호색). English common names include yanhusu