Can I get some help to identify the vine please? I have dug a couple up which have single large root, almost like a parsnip?
It looks like it might be some kind of Marah, or wild cucumber. Apparently (by wikipedia), there are lots of different species of this. When you say it has a root like a parsnip, it sounds like it might be one of them, because they seem to have interesting taproots.
Hope your weed isn't as bad as that.