Corydalis yanhusuo
Corydalis
The Corydalis genus is a relative of the poppy and native to many regions in the Northern Hemisphere and has many different species in China and the Himalayas. It grows in woodland environments and the bright yellow root or tuber is used for medicine. Most yellow roots contain the group of phytochemicals known as alkaloids, and this one is no exception. It has been used by all cultures where it is native, and species found in North America have a long history of use.