I forget the name of these (does anyone recognise it?) but the tour guide told us that they are a pot plant that has escaped from the pot and is now establishing itself in various parts of Central Oz. Usually if you frown at a pot plant it dies so these must not have read the pot plant hand book.
These were growing alongside the Stuart Highway and while they look very pretty at present, let's hope it doesn't get out of hand.
Thanks to Margaret @ubobohobo , it is Rosy Dock
Looks very pretty. Pity it is an invader. Your lovely photo makes it look very special. Is it Rosy Dock? I remember sharing a story book with my school kids about Rosy Dock and thought this may be it.