Smilax/greenbriar that invade my garden from the wooded lot behind the back fence has wicked thorns. They use the thorns to hook on/cling and climb up the undergrowth shrubs, reach up to low hanging tree branches and then climb on up to overhead branches
Some of them are impossible -- and dangerous -- to deal with since there are no safe portion of the thorny vines to grab hold of, and -- more than once -- I've attempted to cut them then yank them down and got hit by the falling/whipping thorny vine. (It always made me think these would be good material for medieval torture
But now I'm intrigued -- next time there's one in an area that I can dig up, I'm going to see if there is a tuber. Apparently, they grow berries that birds like to eat, so there are occasional volunteers that grow under their favorite roosting trees and areas in the garden.
Young greenbriar shoots
are supposed to be tasty wild forage. When I tried to gather some, they have always been swarming with ants -- I think they must be sweet?