It's not uncommon in the Far East ( first spotted on the road side of Ayer Rajah Road, Singapore) and is in fact a weed, but it had me fascinated. I first/last saw it in the days when I was just a curiouse teenager but I just had to touch it whenever I saw it.
I've not done a search 'cos I'm a bit lazy at the moment....! But here is the brief description...what is it?
It's a ground hugger, pale green with leaves resembling a rowan but smaller and tighter together. When it's touched it 'falls asleep', probably a protective action to prevent being eaten, but it really does collapse. No doubt it's a very well known plant ( in this circle of people) but it just came to mind tonight and I'd love to know what it is so I can research...well, look up....a bit of detail on it.