I think 2 comments regarding the Wollemi Pine sum it up. The first by Tony Kirkham of RBG Kew who said "The tree seems to stick two fingers up to convention" and the second, as stated in the book by James Woodford is " The tree is notable for its plasticity, to survive in the canyon it needs to change direction to take advantage of the light". Each tree is like a 'cabbage patch doll' they are all different.