Proboscidea

Proboscidea is a genus of flowering plant in the family Martyniaceae, some of whose species are known as devil's claw, devil's horn, ram's horn, or unicorn plant. The plants produce long, hooked seed pods. The hooks catch on the feet of animals, and as the animals walk, the pods are ground or crushed open, dispersing the seeds. The name devil's claw is shared with the South African plant Harpagophytum procumbens....read more on Wikipedia.