Not sure what proper name of it is but it grows here in TX too, it's a noxious prickly weed, dig the nasty thing up if you can. I hate that thing!!! Get it's prickles in my hands from them all the time. Nasty thing!Not sure of the name of the plant, but we have loads of it here in GA. I don't know if this means anything, but my tortoises don't eat it, even when it grows through the fences into their pens. I am constantly digging up the roots to get rid of this pesky invasive (and painful) vine.