Harpagophytum

Harpagophytum, also called grapple plant, wood spider and most commonly devil's claw, is a genus of plants in the sesame family, native to southern Africa. It owes its common name Devil's Claw to the peculiar appearance of its hooked fruit. The plant's large tuberous roots are used in herbal medicine to reduce pain and fever, and to stimulate digestion. European colonists brought devil's claw home where it was used to treat arthritis.