Artichoke - day 3

I made some nice progress today.   Once this painting is done and at the framer's, I'm going to explain why the artichoke is such a cool thing to paint.  The way its leaves are arranged is a perfect example of the Fibonacci sequence.  It is a mathematical explaination of why the leaves grow in perfect opposing spirals in order to maximize the number of leaves that can grow from the stalk.  Sadly, I'm in a pinch for time but I will explain more about this later.  It is the coolest thing and one of the reasons I was drawn to botanical art in the first place!  In the meantime, enjoy!