Thanks for responding. I also failed to mention that the stripes are on the underside of the leaf.
Here's the back of the leaf:
http://c4.ac-images.myspacecdn.com/i...f7fa5a347b.jpg
Here is the same leaf, front view, no markings:
http://c4.ac-images.myspacecdn.com/i...677b8857d3.jpg