Arisaema, you are right, it looks EXACTLY like that - and remember, I've seen the original.
Couldn't find the pink Disporopsis on the Barracotts site and a pink one isn't listed in their catalogue.
Tim has promised me some seed (are you out there Tim?) so if there's enough..... It shouldn't be tender if grown under trees which is what it likes anyway. Should be OK here anyway.