Smilax species are shrubby vines that can climb up trees using curly tendrils and hooked thorns. Many are evergreen, and 20 species are found in North America north of Mexico. Of these, the most common are catbriers or greenbriers. Sarsaparilla is a medicinal plant native to Mexico. Its common name means “little bramble vine”. Click the links below to learn more about this useful species.