I saw this wallpaper in someone's house I was passing earlier this week, and trying to find it as it would look lovely in my passage way.
It had a white background with wavy lines going up, and leaves that were one solid colour with no detail on the lines (so sort of stem like). Leaves were dotted around the lines, rather than next to each other.
Its similar to an Orla Kiely design, but I've looked and can't see it.