Not sure of the name, but I think thats a general description for them.
Got them from an expensive plant shop last year but they seemed to die of quite quickly while I was away. However, August 2011 they are back!!! Yay!!!.
They come and they go. I was surprised to see them reappear but they dont seem able to spread.
They seem to be growing. I like these and want to plant loads around the back yard, but only towards the end of whatever landscaping im going to do as I dont want to be lawnmowering them over.
Maybe i'll buy more of them, hopefully hey'll spread.