Wild Rhubarb (Rumex hymenosepalus)
Rumex hymenosepalus, commonly known as canaigre, ganagra, wild rhubarb, Arizona dock, and tanner’s dock, is a perennial flowering plant which is native to the western United States and northern Mexico. It has been cultivated in the southwestern United States for the roots, a good source of tannin, which is used in leather tanning. It also yields a yellow dye.
