Smilax is an extremely vigorous plant with pinkish bamboo-like vines bearing small thorns. Leaves vary by species and may be lance, heart shaped or oblong, shiny, and leathery.

Are smilax thorns poisonous?

A Madagascar native and common houseplant known as the crown of thorns (Euphorbia milii) secretes a latex sap when damaged. Smilax = From the Greek name for "poisonous tree" due to the fact that they can overshade the host tree that they climb over and kill it.

Does greenbrier have thorns?

Edible Plants: Common Greenbrier. Description: This vine has lots of strong thorns, broad and heart-shaped leaves, and tendrils that sprout from the leaf axils.