In The Garden: What And Where From?

What might this be? I'm quite sure it isn't native to Colombia. It grows long stalks which eventually lean over and when they touch the ground they root there and grow vertical stalks. I suspect either Aftrica or Brazil as so many garden species here are from those areas.

 

There is some similarity to Dracaena deremensis 'Warneckii'. So even if not that particular one maybe another Dracaena or relation.

 

It's always interesting to see what we normally consider to be indoor plants growing in the wild.

 

Thank you very much and as I suspected it's native to Africa.