Plant identification?

Plant Identification

• http://imgur.com/a/HCP96 What kind of plant is it? I picked Plant up a few years ago in a fancy garden store but it was unlabelled and they didn't know what it was either. A few more clues inside. Additional information: it has very sharp little thorns all along the stems, and interesting peanut-shaped, spongy tubers on the roots. It's never shown any inclination to flower. The stems are woody, number of leaves per cluster is variable, on the whole Plant is disorganised in shape. It likes sun. It's well-nigh indestructible, at least we haven't been able to destroy it. It's a bit prone to mite infestations. I haven't seen anything resembling it in houseplant websites. It's vaguely hemp-like but has thorns, I guess it's some sort of Rosales? I repotted it yesterday and discovered the tubers so now I'm curious!

• Answer:

  Can't help you personally, but I know several people who've IDd plants using http://davesgarden.com/community/forums/f/plantid/all/#b. "Do you have a mystery plant or tree? Post an image (preferred) and/or a detailed description, and your fellow gardeners will help you figure out what it is."