I found it!!! It's from a book called "Japanese Garden Quilt" by Karen Kay Buckley. I came across it on this site:
http://www.stitch-n-frame.net/cgi-im...ardenquilt.jpg
The website is www.stitch-n-frame.net (in case the link above doesn't work).
If you get the book, will you tell us how on EARTH that textured stitching is done, please??
Sue