Based on Willow leaf. Note that the points shown along the left edge in the swatch photo are courtesy of a bit of sway in the pattern and a fair amount of assertive blocking: the stitch count actually remains constant throughout.
This is a bruges Lace Tutorial. I don't know whey they call them bruges lace but it is pretty. It seems so hard to make it. I think I won't make this one but I want to pin it because maybe I will need to make it in the future.