Ok, i was digging around in a friend's garden helping her do so weeding when with my shovel i hit this really strange plant (unfortunately cutting it in half). I bagged it, put it on ice and then proceeded to wonder what the hell it was!
It was purple and porous, kind of like a sponge to the touch. Smelt like... shit, to put it bluntly and these little red things that look like dendrites (like basic diagrams at least) that protrude from the outer rim of the top of the bulbous, tubular structures which make up the bulk of the plant.
Inside the tubes are slimy with black (what i think are superficial), verticle stripes.
The root system is pretty contained as they do not venture far horizontally from the base of the plant.