Arisaema griffithii behaved the same way for me Calin! That was years ago, and I also found nothing when I went searching for it. I have had Arisaema griffithii 'Pradhanii' for several years, it was a huge tuber, I kept that in a cold greenhouse in a pot. It regenerated and made a small tuber which I'm not sure survived after the very harsh winter we had 2010/11.
